documents.txt

delete the middle node of a linked list
minimum difference between largest and smallest value in three moves
minimum number of frogs croaking
replace words
remove all adjacent duplicates in string ii
longest path with different adjacent characters
roman to integer
smallest value of the rearranged number
contains duplicate
minimum swaps to make strings equal
longest common subsequence
strange printer ii
maximum ice cream bars
linked list in binary tree
find the student that will replace the chalk
median of two sorted arrays
decode ways
rotate image
find and replace pattern
time needed to buy tickets
pairs of songs with total durations divisible by 60
longest repeating character replacement
check if an original string exists given two encoded strings
add two numbers ii
construct quad tree
minimum window substring
maximum height by stacking cuboids
palindrome partitioning
sum of digits of string after convert
cells with odd values in a matrix
minimum genetic mutation
closest room
combine two tables
largest number at least twice of others
kth smallest product of two sorted arrays
vertical order traversal of a binary tree
last day where you can still cross
classes more than 5 students
coloring a border
count number of homogenous substrings
first bad version
valid perfect square
special positions in a binary matrix
k items with the maximum sum
make two arrays equal by reversing subarrays
minimum cost of buying candies with discount
construct the rectangle
number of sets of k non-overlapping line segments
circular array loop
minimum recolors to get k consecutive black blocks
best time to buy and sell stock
greatest sum divisible by three
remove digit from number to maximize result
check if number is a sum of powers of three
uncrossed lines
path sum ii
search a 2d matrix
prime in diagonal
second minimum node in a binary tree
non-overlapping intervals
freedom trail
super palindromes
course schedule iii
teemo attacking
determine if two events have conflict
calculate digit sum of a string
consecutive numbers sum
reorder data in log files
investments in 2016
display table of food orders in a restaurant
burst balloons
design underground system
smallest good base
count number of teams
employee importance
calculate amount paid in taxes
airplane seat assignment probability
closest nodes queries in a binary search tree
distribute money to maximum children
insertion sort list
number of longest increasing subsequence
query kth smallest trimmed number
plates between candles
find a peak element ii
number of ways to reorder array to get same bst
split linked list in parts
permutations
intersection of multiple arrays
minimum possible integer after at most k adjacent swaps on digits
lowest common ancestor of a binary search tree
count the number of beautiful subarrays
array of doubled pairs
encrypt and decrypt strings
time to cross a bridge
reach a number
the latest time to catch a bus
maximum sum with exactly k elements
sort integers by the power value
maximum tastiness of candy basket
rectangle overlap
self crossing
allocate mailboxes
stone game viii
employees earning more than their managers
maximize the confusion of an exam
percentage of letter in string
open the lock
remove stones to minimize the total
maximum frequency stack
finding 3-digit even numbers
get maximum in generated array
partition list
array partition
triangle
get equal substrings within budget
same tree
minimized maximum of products distributed to any store
all divisions with the highest score of a binary array
number of distinct roll sequences
find all good indices
stock price fluctuation
sliding subarray beauty
check if a string can break another string
average time of process per machine
integer to english words
count the number of good subarrays
find all lonely numbers in the array
spiral matrix iii
jump game vi
minimum adjacent swaps for k consecutive ones
rank transform of a matrix
patients with a condition
special binary string
minimum time visiting all points
managers with at least 5 direct reports
minimum average difference
set mismatch
swapping nodes in a linked list
design graph with shortest path calculator
decode the message
shortest cycle in a graph
binary tree coloring game
distribute candies to people
scramble string
sort the jumbled numbers
find minimum in rotated sorted array ii
split a string in balanced strings
range sum query - mutable
recyclable and low fat products
running sum of 1d array
customers who never order
patching array
find n unique integers sum up to zero
implement rand10() using rand7()
design a text editor
minimum number of vertices to reach all nodes
guess number higher or lower ii
min stack
number of different integers in a string
maximum xor for each query
distinct subsequences ii
divide a string into groups of size k
sort the matrix diagonally
check if there is a valid partition for the array
build an array with stack operations
find players with zero or one losses
design parking system
stone game
valid parentheses
flipping an image
minimum operations to reduce x to zero
adding two negabinary numbers
sentence similarity iii
separate the digits in an array
triples with bitwise and equal to zero
longest arithmetic subsequence of given difference
print in order
largest local values in a matrix
minimum moves to move a box to their target location
longest subsequence repeated k times
path with minimum effort
all ancestors of a node in a directed acyclic graph
magic squares in grid
maximum total importance of roads
check if numbers are ascending in a sentence
car pooling
can place flowers
count fertile pyramids in a land
day of the week
word ladder ii
dota2 senate
parallel courses ii
largest positive integer that exists with its negative
find substring with given hash value
maximal rectangle
evaluate boolean binary tree
binary tree level order traversal ii
verify preorder serialization of a binary tree
generate random point in a circle
minimum cost to make array equal
wiggle subsequence
number of wonderful substrings
edit distance
monotone increasing digits
count days spent together
di string match
numbers with repeated digits
number of unequal triplets in array
minimum swaps to make sequences increasing
minimum number of operations to reinitialize a permutation
intersection of two arrays ii
find the difference of two arrays
subarray product less than k
flower planting with no adjacent
maximum gap
maximum number of ways to partition an array
maximum score of a good subarray
factorial trailing zeroes
increasing triplet subsequence
counting words with a given prefix
check if all a's appears before all b's
subarrays with k different integers
tweet counts per frequency
lucky numbers in a matrix
water bottles
stream of characters
repeated string match
best time to buy and sell stock iv
reverse linked list
ugly number iii
find elements in a contaminated binary tree
capital gain/loss
cinema seat allocation
sliding puzzle
longest word in dictionary through deleting
snail traversal
univalued binary tree
create components with same value
largest perimeter triangle
concatenated words
shopping offers
maximum number of achievable transfer requests
self dividing numbers
check array formation through concatenation
slowest key
number of students doing homework at a given time
count vowel substrings of a string
convert bst to greater tree
escape the ghosts
maximum length of repeated subarray
letter combinations of a phone number
top k frequent elements
shifting letters
finding mk average
diagonal traverse ii
remove duplicates from sorted list
longest consecutive sequence
find the width of columns of a grid
data stream as disjoint intervals
the time when the network becomes idle
linked list components
find array given subset sums
container with most water
contain virus
reverse integer
vowels of all substrings
find the divisibility array of a string
binary tree preorder traversal
similar string groups
number of orders in the backlog
game play analysis i
sequential digits
knight probability in chessboard
check if a string contains all binary codes of size k
minimum number of operations to sort a binary tree by level
minimum number of operations to make string sorted
tree node
k inverse pairs array
find duplicate file in system
the score of students solving math expression
most stones removed with same row or column
integer to roman
customer who visited but did not make any transactions
robot bounded in circle
find the distance value between two arrays
maximum width of binary tree
design twitter
convert 1d array into 2d array
utf-8 validation
number of flowers in full bloom
count ways to make array with product
backspace string compare
check if string is transformable with substring sort operations
count all possible routes
last stone weight ii
divide nodes into the maximum number of groups
ugly number ii
detect pattern of length m repeated k or more times
binary trees with factors
minimum time to finish the race
second largest digit in a string
most common word
complex number multiplication
fair distribution of cookies
stamping the sequence
minimum add to make parentheses valid
remove invalid parentheses
not boring movies
binary tree tilt
count artifacts that can be extracted
number of pairs of interchangeable rectangles
number of students unable to eat lunch
maximum width ramp
find the kth smallest sum of a matrix with sorted rows
maximum number of removable characters
valid mountain array
find the town judge
minimum number of days to eat n oranges
path with maximum gold
count substrings that differ by one character
odd even jump
random pick with blacklist
make sum divisible by p
last person to fit in the bus
iterator for combination
merge strings alternately
longest binary subsequence less than or equal to k
minimum number of operations to make arrays similar
critical connections in a network
goat latin
number of pairs satisfying inequality
number of ways where square of number is equal to product of two numbers
smallest range i
wiggle sort ii
jump game vii
student attendance record ii
find the index of the first occurrence in a string
count primes
contains duplicate iii
reorder routes to make all paths lead to the city zero
smallest subtree with all the deepest nodes
minimum cost to reach destination in time
replace non-coprime numbers in array
palindrome partitioning iv
longest harmonious subsequence
avoid flood in the city
minimum penalty for a shop
redundant connection ii
watering plants
super ugly number
short encoding of words
minimum number of arrows to burst balloons
first missing positive
find longest awesome substring
number of ways to rearrange sticks with k sticks visible
reachable nodes in subdivided graph
recover binary search tree
print words vertically
number of ways to split a string
n-queens ii
largest 1-bordered square
design hashset
most frequent subtree sum
apply bitwise operations to make strings equal
triangle judgement
number of good pairs
check if a parentheses string can be valid
sort list
count good meals
maximum compatibility score sum
increment submatrices by one
cat and mouse
create sorted array through instructions
frog jump ii
increasing decreasing string
convert binary number in a linked list to integer
find the kth largest integer in the array
reverse odd levels of binary tree
minimum moves to equal array elements ii
range module
number of laser beams in a bank
substring xor queries
squares of a sorted array
find all people with secret
where will the ball fall
customers who bought all products
max difference you can get from changing an integer
minimum number of increments on subarrays to form a target array
combination sum iii
closest divisors
arranging coins
design linked list
minimum distance to type a word using two fingers
number of ways to form a target string given a dictionary
additive number
maximum candies allocated to k children
number of segments in a string
number of days between two dates
maximum rows covered by columns
restore ip addresses
word search ii
binary tree postorder traversal
count good numbers
longest arithmetic subsequence
card flipping game
height of binary tree after subtree removal queries
cells in a range on an excel sheet
largest number after mutating substring
count number of pairs with absolute difference k
smallest rotation with highest score
check if array is sorted and rotated
break a palindrome
count number of rectangles containing each point
stone game iv
prime number of set bits in binary representation
unique morse code words
reverse nodes in even length groups
sleep
maximum sum of two non-overlapping subarrays
odd string difference
minimum number of flips to make the binary string alternating
excel sheet column number
rearrange spaces between words
largest combination with bitwise and greater than zero
number of visible people in a queue
minimum cost to merge stones
maximum genetic difference query
rearrange words in a sentence
closest prime numbers in range
strange printer
count the number of complete components
minimum score triangulation of polygon
equal rational numbers
largest time for given digits
split the array to make coprime products
sliding window median
climbing stairs
minimum total distance traveled
find missing observations
count the digits that divide a number
collect coins in a tree
concatenation of array
check if all characters have equal number of occurrences
encode and decode tinyurl
binary prefix divisible by 5
minimum one bit operations to make integers zero
partition to k equal sum subsets
snakes and ladders
equal sum arrays with minimum number of operations
walking robot simulation
find the middle index in array
optimal partition of string
least operators to express number
merge sorted array
largest multiple of three
sell diminishing-valued colored balls
put marbles in bags
boats to save people
divide players into teams of equal skill
sorting the sentence
move pieces to obtain a string
string without aaa or bbb
split array with same average
soup servings
stamping the grid
maximum non negative product in a matrix
single-threaded cpu
candy
successful pairs of spells and potions
sum multiples
minimum rounds to complete all tasks
smallest missing non-negative integer after operations
champagne tower
rearrange array to maximize prefix score
solve the equation
word pattern
my calendar ii
sum of k-mirror numbers
split a string into the max number of unique substrings
trim a binary search tree
minimum time to type word using special typewriter
minimum number of removals to make mountain array
substring with largest variance
keep multiplying found values by two
check if the sentence is pangram
fizz buzz
unique binary search trees ii
number of substrings with only 1s
smallest index with equal value
bitwise and of numbers range
categorize box according to criteria
invert binary tree
longest univalue path
array nesting
maximum value after insertion
largest odd number in string
combination sum iv
make number of distinct characters equal
minimum absolute sum difference
sequentially ordinal rank tracker
count integers with even digit sum
gas station
bricks falling when hit
validate stack sequences
lowest common ancestor of deepest leaves
find the difference
asteroid collision
minimum operations to reduce an integer to 0
permutation sequence
binary subarrays with sum
largest sum of averages
search in a binary search tree
russian doll envelopes
number of distinct averages
maximum number of words found in sentences
groups of special-equivalent strings
word ladder
fair candy swap
user activity for the past 30 days i
3sum with multiplicity
find if path exists in graph
minimum number of food buckets to feed the hamsters
make the xor of all segments equal to zero
nth magical number
sum of square numbers
4sum
nearest exit from entrance in maze
distinct echo substrings
distance between bus stops
promise pool
remove boxes
find kth largest xor coordinate value
students and examinations
construct target array with multiple sums
pascal's triangle ii
design a food rating system
number complement
palindrome linked list
smallest missing genetic value in each subtree
design memory allocator
capitalize the title
valid permutations for di sequence
the kth factor of n
booking concert tickets in groups
people whose list of favorite companies is not a subset of another list
maximum white tiles covered by a carpet
different ways to add parentheses
super washing machines
count ways to build good strings
masking personal information
strong password checker
two best non-overlapping events
combination sum
minimum money required before transactions
minimum difference between highest and lowest of k scores
consecutive numbers
count triplets that can form two arrays of equal xor
remove duplicates from sorted list ii
poor pigs
surface area of 3d shapes
find right interval
sum of prefix scores of strings
number of ways to wear different hats to each other
cheapest flights within k stops
search in rotated sorted array ii
find good days to rob the bank
divide array into equal pairs
longest nice subarray
surrounded regions
count array pairs divisible by k
maximum trailing zeros in a cornered path
bulb switcher ii
design front middle back queue
three consecutive odds
the number of beautiful subsets
count binary substrings
minimum additions to make valid string
determine color of a chessboard square
remove k digits
painting a grid with three different colors
non-negative integers without consecutive ones
design circular queue
sort characters by frequency
valid palindrome
gray code
minimum operations to make the array increasing
find closest number to zero
check if a word occurs as a prefix of any word in a sentence
rotting oranges
number of boomerangs
find numbers with even number of digits
partition equal subset sum
minimum area rectangle ii
power of three
find xor sum of all pairs bitwise and
mini parser
kth smallest element in a sorted matrix
minimum deletions to make array beautiful
range sum of sorted subarray sums
finding the users active minutes
delete leaves with a given value
apply discount every n orders
valid square
remove nth node from end of list
reduce array size to the half
arithmetic subarrays
paths in matrix whose sum is divisible by k
palindrome partitioning ii
lfu cache
reverse substrings between each pair of parentheses
count the number of square-free subsets
valid boomerang
sort array by parity
longest happy prefix
shortest distance to target string in a circular array
pass the pillow
number of subarrays with gcd equal to k
maximum students taking exam
find the longest valid obstacle course at each position
merge triplets to form target triplet
koko eating bananas
maximum number of non-overlapping subarrays with sum equals target
frequency of the most frequent element
build array from permutation
remove comments
remove letter to equalize frequency
rle iterator
maximum number of coins you can get
count nodes equal to average of subtree
detonate the maximum bombs
shortest completing word
isomorphic strings
cousins in binary tree
parallel courses iii
minimum speed to arrive on time
partition array into two arrays to minimize sum difference
diameter of binary tree
number of paths with max score
jump game ii
maximum score after splitting a string
count the number of fair pairs
increasing order search tree
n-repeated element in size 2n array
biggest single number
subtree of another tree
greatest english letter in upper and lower case
merge bsts to create single bst
maximum depth of n-ary tree
excel sheet column title
minimum elements to add to form a given sum
product of array except self
unique email addresses
smallest integer divisible by k
maximum star sum of a graph
frog jump
majority element
truncate sentence
remove duplicates from sorted array ii
two furthest houses with different colors
filter elements from array
exclusive time of functions
count unguarded cells in the grid
html entity parser
maximum level sum of a binary tree
count words obtained after adding a letter
maximum of absolute value expression
handling sum queries after update
find a corresponding node of a binary tree in a clone of that tree
count pairs with xor in a range
maximum fruits harvested after at most k steps
delete columns to make sorted ii
calculate special bonus
find k closest elements
evaluate the bracket pairs of a string
corporate flight bookings
tree of coprimes
verbal arithmetic puzzle
single number ii
detect cycles in 2d grid
find in mountain array
largest 3-same-digit number in string
product price at a given date
fix names in a table
populating next right pointers in each node ii
maximum distance between a pair of values
degree of an array
count of smaller numbers after self
maximum 69 number
maximum number of tasks you can assign
count all valid pickup and delivery options
longest substring with at least k repeating characters
minimum operations to make the array alternating
neighboring bitwise xor
buddy strings
lexicographical numbers
maximum sum obtained of any permutation
recover a tree from preorder traversal
search in rotated sorted array
add edges to make degrees of all nodes even
partition string into substrings with values at most k
range sum query 2d - immutable
maximum number of consecutive values you can make
find the highest altitude
tenth line
minimum xor sum of two arrays
count the hidden sequences
minimum number of refueling stops
count integers in intervals
swap salary
maximum equal frequency
symmetric tree
smallest range covering elements from k lists
basic calculator iv
elimination game
minimum absolute difference in bst
sales person
ways to make a fair array
first day where you have been in all the rooms
kth largest sum in a binary tree
flip string to monotone increasing
remove all adjacent duplicates in string
get biggest three rhombus sums in a grid
number of senior citizens
goal parser interpretation
single element in a sorted array
primary department for each employee
next permutation
house robber iv
make array empty
possible bipartition
find lucky integer in an array
flood fill
reverse subarray to maximize array value
find greatest common divisor of array
find original array from doubled array
alert using same key-card three or more times in a one hour period
sum of total strength of wizards
minimize the total price of the trips
camelcase matching
vowel spellchecker
count number of bad pairs
copy list with random pointer
lemonade change
the skyline problem
contains duplicate ii
minimum obstacle removal to reach corner
the employee that worked on the longest task
n-queens
watering plants ii
erect the fence
groups of strings
minimum number of operations to convert time
spiral matrix
number of ways to select buildings
minimum cost to connect two groups of points
maximum matching of players with trainers
reverse nodes in k-group
minimum impossible or
execution of all suffix instructions staying in a grid
the earliest and latest rounds where players compete
convert sorted list to binary search tree
promise time limit
number of lines to write string
maximize greatness of an array
graph connectivity with threshold
path sum iii
reduction operations to make the array elements equal
find smallest letter greater than target
length of longest fibonacci subsequence
process tasks using servers
longest palindromic substring
daily leads and partners
search suggestions system
random pick with weight
snapshot array
number of steps to reduce a number to zero
minimum height trees
check if n and its double exist
unique paths ii
nth highest salary
number of rectangles that can form the largest square
valid palindrome ii
find the duplicate number
number of pairs of strings with concatenation equal to target
brace expansion ii
number of submatrices that sum to target
brick wall
random flip matrix
power of two
maximum bags with full capacity of rocks
implement stack using queues
create binary tree from descriptions
minimum path cost in a grid
basic calculator
minimum depth of binary tree
transform to chessboard
json deep equal
check if word is valid after substitutions
maximal square
longest cycle in a graph
baseball game
queue reconstruction by height
maximum product of splitted binary tree
maximum matrix sum
matrix block sum
minimum deletions to make array divisible
time based key-value store
find the k-sum of an array
kth largest element in an array
pascal's triangle
binary string with substrings representing 1 to n
throne inheritance
online election
memoize
hamming distance
subarray sums divisible by k
kth missing positive number
stone game iii
find resultant array after removing anagrams
count number of special subsequences
destroy sequential targets
numbers with same consecutive differences
accounts merge
rank teams by votes
maximum good people based on statements
check if word can be placed in crossword
minimum weighted subgraph with the required paths
minimum swaps to arrange a binary grid
cache with time limit
count subarrays with median k
minesweeper
maximum sum of distinct subarrays with length k
merge nodes in between zeros
smallest string with a given numeric value
number of ways to split array
subsets ii
bitwise ors of subarrays
race car
number of valid words in a sentence
delete and earn
chunk array
shuffle an array
longest subsequence with limited sum
check if there is a valid parentheses string path
path sum
earliest possible day of full bloom
reverse only letters
count anagrams
check if two string arrays are equivalent
subarray with elements greater than varying threshold
design authentication manager
number of closed islands
nim game
minimum subsequence in non-increasing order
assign cookies
finding pairs with a certain sum
fibonacci number
split array largest sum
print binary tree
integer break
sum of beauty in the array
find followers count
number of people aware of a secret
kids with the greatest number of candies
complete binary tree inserter
occurrences after bigram
serialize and deserialize bst
valid number
trapping rain water ii
jump game iv
number of ways to earn points
flatten binary tree to linked list
actors and directors who cooperated at least three times
maximize number of nice divisors
minimum cost to set cooking time
online stock span
minimum cost to hire k workers
minimum number of steps to make two strings anagram
count submatrices with all ones
maximum product after k increments
relative ranks
maximize number of subsequences in a string
three divisors
find the smallest divisor given a threshold
number of digit one
flip columns for maximum number of equal rows
sales analysis iii
smallest string starting from leaf
my calendar i
append k integers with minimal sum
can i win
construct binary search tree from preorder traversal
find the distinct difference array
student attendance record i
available captures for rook
group the people given the group size they belong to
sign of the product of an array
design bitset
sum root to leaf numbers
trips and users
interleaving string
peeking iterator
maximize win from two segments
frog position after t seconds
minimum distance between bst nodes
distribute candies
profitable schemes
linked list random node
maximum element after decreasing and rearranging
calculate money in leetcode bank
count subarrays with score less than k
find closest node to given two nodes
longest nice substring
valid triangle number
minimum score of a path between two cities
find consecutive integers from a data stream
design hashmap
maximum erasure value
exchange seats
maximum score of spliced array
daily temperatures
check completeness of a binary tree
group sold products by the date
find the string with lcp
remove colored pieces if both neighbors are the same color
top travellers
adding spaces to a string
naming a company
bank account summary ii
maximum subarray sum with one deletion
find critical and pseudo-critical edges in minimum spanning tree
count items matching a rule
sum of two integers
sum of distances in tree
two city scheduling
average of levels in binary tree
132 pattern
shift 2d grid
path with maximum probability
maximum number of darts inside of a circular dartboard
find bottom left tree value
find and replace in string
minimum number of visited cells in a grid
longest square streak in an array
rotated digits
longest increasing subsequence ii
binary watch
longest substring without repeating characters
make array zero by subtracting equal amounts
third maximum number
sum of beauty of all substrings
generate fibonacci sequence
longest turbulent subarray
last moment before all ants fall out of a plank
find score of an array after marking all elements
find first palindromic string in the array
counter
build array where you can find the maximum exactly k comparisons
take gifts from the richest pile
rotate string
maximize sum of array after k negations
best position for a service centre
minimum initial energy to finish tasks
range sum query - immutable
find servers that handled most number of requests
find three consecutive integers that sum to a given number
regions cut by slashes
maximum points you can obtain from cards
count special integers
domino and tromino tiling
maximum split of positive even integers
swap nodes in pairs
maximum number of visible points
print foobar alternately
maximum candies you can get from boxes
convert the temperature
maximum xor after operations
minimum numbers of function calls to make target array
minimum number of taps to open to water a garden
count common words with one occurrence
count good triplets
maximum repeating substring
sum game
number of nodes in the sub-tree with the same label
minimum domino rotations for equal row
can convert string in k moves
maximum difference between node and ancestor
the k-th lexicographical string of all happy strings of length n
friends of appropriate ages
number of good paths
height checker
range sum of bst
minimum cost of a path with special roads
minimum absolute difference queries
minimum operations to make the array k-increasing
latest time by replacing hidden digits
maximum number of groups entering a competition
n-ary tree preorder traversal
sum of subarray ranges
least number of unique integers after k removals
reverse string
unique substrings in wraparound string
minimum remove to make valid parentheses
design circular deque
maximum number of balloons
count number of possible root nodes
longest continuous subarray with absolute diff less than or equal to limit
unique paths iii
minimum value to get positive step by step sum
check if binary string has at most one segment of ones
partition array for maximum sum
minimum adjacent swaps to reach the kth smallest number
maximize distance to closest person
satisfiability of equality equations
merge similar items
best poker hand
decoded string at index
cousins in binary tree ii
find the closest palindrome
keyboard row
construct smallest number from di string
binary tree right side view
largest merge of two strings
rearrange characters to make target string
largest palindromic number
maximum subsequence score
largest component size by common factor
find latest group of size m
3sum closest
minimum white tiles after covering with carpets
maximum score from removing stones
minimum number of operations to make all array elements equal to 1
rising temperature
apply transform over each element in array
long pressed name
number of atoms
build a matrix with conditions
k-diff pairs in an array
apply operations to an array
maximum difference between increasing elements
delete columns to make sorted
task scheduler ii
decrypt string from alphabet to integer mapping
longest uploaded prefix
longest common subpath
number of ways to stay in the same place after some steps
video stitching
find customer referee
minimize malware spread ii
richest customer wealth
shortest subarray to be removed to make array sorted
words within two edits of dictionary
powerful integers
unique number of occurrences
cherry pickup
as far from land as possible
minimum degree of a connected trio in a graph
course schedule ii
maximum nesting depth of two valid parentheses strings
range product queries of powers
check if object instance of class
clumsy factorial
random point in non-overlapping rectangles
x of a kind in a deck of cards
pyramid transition matrix
sort array by increasing frequency
merge two 2d arrays by summing values
beautiful arrangement ii
minimum total space wasted with k resizing operations
insert into a binary search tree
shortest unsorted continuous subarray
prison cells after n days
reordered power of 2
removing minimum number of magic beans
minimum addition to make integer beautiful
find pivot index
find the maximum number of marked indices
counter ii
first unique character in a string
longest happy string
function composition
remove one element to make the array strictly increasing
longest substring of one repeating character
immediate food delivery ii
number of zero-filled subarrays
maximum nesting depth of the parentheses
design a number container system
maximal network rank
merge in between linked lists
construct k palindrome strings
find target indices after sorting array
check if array pairs are divisible by k
maximum alternating subsequence sum
pow(x, n)
maximum difference by remapping a digit
projection area of 3d shapes
day of the year
meeting rooms iii
find largest value in each tree row
maximum number of non-overlapping substrings
maximum number of points from grid queries
friend requests ii: who has the most friends
left and right sum differences
distinct subsequences
permutations ii
cyclically rotating a grid
rearrange array elements by sign
partitioning into minimum number of deci-binary numbers
jump game
concatenation of consecutive binary numbers
find the maximum divisibility score
difference between maximum and minimum price sum
count servers that communicate
count largest group
check if all the integers in a range are covered
second minimum time to reach destination
shortest palindrome
maximum sum of 3 non-overlapping subarrays
group by
remove duplicate letters
special array with x elements greater than or equal x
bus routes
maximum subarray
sum of nodes with even-valued grandparent
three equal parts
permutation in string
maximum points in an archery competition
sum of floored pairs
remove all occurrences of a substring
find k-th smallest pair distance
01 matrix
my calendar iii
minimum reverse operations
removing minimum and maximum from array
deepest leaves sum
multiply strings
making file names unique
peak index in a mountain array
longest subarray of 1's after deleting one element
take k of each character from left and right
reverse words in a string iii
shortest subarray with sum at least k
reverse string ii
daily temperatures
check completeness of a binary tree
group sold products by the date
find the string with lcp
remove colored pieces if both neighbors are the same color
top travellers
adding spaces to a string
naming a company
bank account summary ii
maximum subarray sum with one deletion
find critical and pseudo-critical edges in minimum spanning tree
count items matching a rule
sum of two integers
sum of distances in tree
two city scheduling
average of levels in binary tree
132 pattern
shift 2d grid
path with maximum probability
maximum number of darts inside of a circular dartboard
find bottom left tree value
find and replace in string
minimum number of visited cells in a grid
longest square streak in an array
rotated digits
longest increasing subsequence ii
binary watch
longest substring without repeating characters
make array zero by subtracting equal amounts
third maximum number
sum of beauty of all substrings
generate fibonacci sequence
longest turbulent subarray
last moment before all ants fall out of a plank
find score of an array after marking all elements
find first palindromic string in the array
counter
build array where you can find the maximum exactly k comparisons
take gifts from the richest pile
rotate string
maximize sum of array after k negations
best position for a service centre
minimum initial energy to finish tasks
range sum query - immutable
find servers that handled most number of requests
find three consecutive integers that sum to a given number
regions cut by slashes
maximum points you can obtain from cards
count special integers
domino and tromino tiling
maximum split of positive even integers
swap nodes in pairs
maximum number of visible points
print foobar alternately
maximum candies you can get from boxes
convert the temperature
maximum xor after operations
minimum numbers of function calls to make target array
minimum number of taps to open to water a garden
count common words with one occurrence
count good triplets
maximum repeating substring
sum game
number of nodes in the sub-tree with the same label
minimum domino rotations for equal row
can convert string in k moves
maximum difference between node and ancestor
the k-th lexicographical string of all happy strings of length n
friends of appropriate ages
number of good paths
height checker
range sum of bst
minimum cost of a path with special roads
minimum absolute difference queries
minimum operations to make the array k-increasing
latest time by replacing hidden digits
maximum number of groups entering a competition
n-ary tree preorder traversal
sum of subarray ranges
least number of unique integers after k removals
reverse string
unique substrings in wraparound string
minimum remove to make valid parentheses
design circular deque
maximum number of balloons
count number of possible root nodes
longest continuous subarray with absolute diff less than or equal to limit
unique paths iii
minimum value to get positive step by step sum
check if binary string has at most one segment of ones
partition array for maximum sum
minimum adjacent swaps to reach the kth smallest number
maximize distance to closest person
satisfiability of equality equations
merge similar items
best poker hand
decoded string at index
cousins in binary tree ii
find the closest palindrome
keyboard row
construct smallest number from di string
binary tree right side view
largest merge of two strings
rearrange characters to make target string
largest palindromic number
maximum subsequence score
largest component size by common factor
find latest group of size m
3sum closest
minimum white tiles after covering with carpets
maximum score from removing stones
minimum number of operations to make all array elements equal to 1
rising temperature
apply transform over each element in array
long pressed name
number of atoms
build a matrix with conditions
k-diff pairs in an array
apply operations to an array
maximum difference between increasing elements
delete columns to make sorted
task scheduler ii
decrypt string from alphabet to integer mapping
longest uploaded prefix
longest common subpath
number of ways to stay in the same place after some steps
video stitching
find customer referee
minimize malware spread ii
richest customer wealth
shortest subarray to be removed to make array sorted
words within two edits of dictionary
powerful integers
unique number of occurrences
cherry pickup
as far from land as possible
minimum degree of a connected trio in a graph
course schedule ii
maximum nesting depth of two valid parentheses strings
range product queries of powers
check if object instance of class
clumsy factorial
random point in non-overlapping rectangles
x of a kind in a deck of cards
pyramid transition matrix
sort array by increasing frequency
merge two 2d arrays by summing values
beautiful arrangement ii
minimum total space wasted with k resizing operations
insert into a binary search tree
shortest unsorted continuous subarray
prison cells after n days
reordered power of 2
removing minimum number of magic beans
minimum addition to make integer beautiful
find pivot index
find the maximum number of marked indices
counter ii
first unique character in a string
longest happy string
function composition
remove one element to make the array strictly increasing
longest substring of one repeating character
immediate food delivery ii
number of zero-filled subarrays
maximum nesting depth of the parentheses
design a number container system
maximal network rank
merge in between linked lists
construct k palindrome strings
find target indices after sorting array
check if array pairs are divisible by k
maximum alternating subsequence sum
pow(x, n)
maximum difference by remapping a digit
projection area of 3d shapes
day of the year
meeting rooms iii
find largest value in each tree row
maximum number of non-overlapping substrings
maximum number of points from grid queries
friend requests ii: who has the most friends
left and right sum differences
distinct subsequences
permutations ii
cyclically rotating a grid
rearrange array elements by sign
partitioning into minimum number of deci-binary numbers
jump game
concatenation of consecutive binary numbers
find the maximum divisibility score
difference between maximum and minimum price sum
count servers that communicate
count largest group
check if all the integers in a range are covered
second minimum time to reach destination
shortest palindrome
maximum sum of 3 non-overlapping subarrays
group by
remove duplicate letters
special array with x elements greater than or equal x
bus routes
maximum subarray
sum of nodes with even-valued grandparent
three equal parts
permutation in string
maximum points in an archery competition
sum of floored pairs
remove all occurrences of a substring
find k-th smallest pair distance
01 matrix
my calendar iii
minimum reverse operations
removing minimum and maximum from array
deepest leaves sum
multiply strings
making file names unique
peak index in a mountain array
longest subarray of 1's after deleting one element
take k of each character from left and right
reverse words in a string iii
shortest subarray with sum at least k
reverse string ii
capacity to ship packages within d days
sum of numbers with units digit k
count the number of ideal arrays
binary number with alternating bits
all nodes distance k in binary tree
numbers at most n given digit set
process restricted friend requests
egg drop with 2 eggs and n floors
minimum cost to move chips to the same position
reverse linked list ii
rotate list
word search
binary search
decode ways ii
number of matching subsequences
expression add operators
count number of nice subarrays
count nice pairs in an array
word break ii
prime palindrome
second highest salary
removing stars from a string
find the punishment number of an integer
maximum total beauty of the gardens
rectangle area
employee bonus
sum of all subset xor totals
minimum length of string after deleting similar ends
compare version numbers
bulb switcher
check if word equals summation of two words
remove covered intervals
non-decreasing subsequences
largest palindrome product
next greater node in linked list
sort colors
best time to buy and sell stock with transaction fee
maximum number of fish in a grid
reformat date
count negative numbers in a sorted matrix
find all good strings
minimum string length after removing substrings
cut off trees for golf event
maximum xor with an element from array
get the maximum score
minimum distance to the target element
intersection of two linked lists
k-concatenation maximum sum
replace elements in an array
element appearing more than 25% in sorted array
predict the winner
sort integers by the number of 1 bits
count salary categories
implement queue using stacks
minimum difficulty of a job schedule
number of ways to separate numbers
two sum
minimum operations to make a subsequence
regular expression matching
binary tree level order traversal
split message based on limit
maximum number of vowels in a substring of given length
minimum number of swaps to make the binary string alternating
rotating the box
confirmation rate
array prototype last
subsets
arithmetic slices
thousand separator
reshape the matrix
count vowels permutation
maximum depth of binary tree
swap for longest repeated character substring
maximum area of a piece of cake after horizontal and vertical cuts
combination sum ii
add minimum number of rungs
simplify path
continuous subarray sum
house robber ii
number of smooth descent periods of a stock
can make arithmetic progression from sequence
minimum fuel cost to report to the capital
circular sentence
group anagrams
word subsets
delete operation for two strings
create hello world function
maximum number of events that can be attended
check if number has equal digit count and digit value
reformat phone number
word break
longest duplicate substring
ones and zeroes
score after flipping matrix
average salary excluding the minimum and maximum salary
delivering boxes from storage to ports
debounce
minimum area rectangle
count square sum triples
reaching points
employees with missing information
number of valid clock times
dice roll simulation
maximum binary tree ii
delete greatest value in each row
count vowel strings in ranges
sum of root to leaf binary numbers
minimum operations to make a uni-value grid
remove linked list elements
max dot product of two subsequences
count square submatrices with all ones
prime subtraction operation
partition array into three parts with equal sum
stone game ii
water and jug problem
xor queries of a subarray
largest magic square
advantage shuffle
maximum length of subarray with positive product
missing number
random pick index
big countries
min cost to connect all points
rotate function
find all anagrams in a string
find the losers of the circular game
xor operation in an array
prime arrangements
super egg drop
reachable nodes with restrictions
making a large island
maximum swap
4sum ii
minimum number of work sessions to finish the tasks
range addition ii
reorganize string
minimum skips to arrive at meeting on time
valid tic-tac-toe state
delete columns to make sorted iii
longest chunked palindrome decomposition
filter restaurants by vegan-friendly, price and distance
k-th symbol in grammar
split array into consecutive subsequences
binary tree inorder traversal
broken calculator
falling squares
queries quality and percentage
time needed to inform all employees
letter case permutation
k-similar strings
binary tree zigzag level order traversal
remove nodes from linked list
minimum number of days to disconnect island
number of valid move combinations on chessboard
number of times binary string is prefix-aligned
interval list intersections
global and local inversions
cracking the safe
custom sort string
find all groups of farmland
design browser history
rearranging fruits
minimum sum of four digit number after splitting digits
minimum moves to reach target score
furthest building you can reach
count ways to group overlapping ranges
all paths from source to target
shortest impossible sequence of rolls
k highest ranked items within a price range
largest divisible subset
subarray sum equals k
number of ways to buy pens and pencils
throttle
minimum deletions to make string balanced
restore the array from adjacent pairs
perfect squares
construct string with repeat limit
find the original array of prefix xor
verifying an alien dictionary
parse lisp expression
game play analysis iv
max chunks to make sorted ii
find mode in binary search tree
shortest path in binary matrix
exam room
find winner on a tic tac toe game
count unique characters of all substrings of a given string
construct binary tree from preorder and inorder traversal
complement of base 10 integer
moving stones until consecutive ii
convert to base -2
lru cache
filling bookcase shelves
department highest salary
k-th smallest in lexicographical order
queries on a permutation with key
remove zero sum consecutive nodes from linked list
palindromic substrings
monotonic array
count operations to obtain zero
maximize score after n operations
number of strings that appear as substrings in word
bitwise xor of all pairings
find k pairs with smallest sums
product sales analysis i
counting bits
department top three salaries
minimum flips to make a or b equal to c
four divisors
replace the substring for balanced string
detect capital
coordinate with maximum network quality
n-th tribonacci number
compare strings by frequency of the smallest character
convert object to json string
maximum value at a given index in a bounded array
human traffic of stadium
flatten nested list iterator
h-index
shortest bridge
lowest common ancestor of a binary tree
basic calculator ii
smallest k-length subsequence with occurrences of a letter
destination city
max value of equation
minimum time to complete all tasks
two sum ii - input array is sorted
paint house iii
maximum building height
smallest string with swaps
max increase to keep city skyline
insert delete getrandom o(1)
delete node in a bst
minimum moves to equal array elements
longest well-performing interval
longest absolute file path
find valid matrix given row and column sums
minimum moves to make array complementary
decode xored array
fancy sequence
next greater element ii
largest triangle area
flatten a multilevel doubly linked list
robot return to origin
longest palindromic subsequence
subtract the product and sum of digits of an integer
minimum moves to convert string
array reduce transformation
largest plus sign
car fleet ii
the latest login in 2020
rabbits in forest
number of excellent pairs
minimum time to repair cars
find the city with the smallest number of neighbors at a threshold distance
minimize maximum of array
match substring after replacement
determine whether matrix can be obtained by rotation
design an ordered stream
minimum interval to include each query
minimum cuts to divide a circle
minimum number of moves to seat everyone
the number of the smallest unoccupied chair
sliding window maximum
network delay time
maximum segment sum after removals
find users with valid e-mails
max number of k-sum pairs
find all k-distant indices in an array
number of burgers with no waste of ingredients
minimum time difference
all o`one data structure
maximum xor of two numbers in an array
sum of digits in base k
design skiplist
count prefixes of a given string
fruit into baskets
maximum number of robots within budget
best time to buy and sell stock with cooldown
count number of ways to place houses
minimum cost homecoming of a robot in a grid
beautiful arrangement
sort array by parity ii
merge two binary trees
final prices with a special discount in a shop
battleships in a board
uncommon words from two sentences
n-ary tree postorder traversal
sum of all odd length subarrays
grid game
add two numbers
smallest sufficient team
binary tree paths
minimize malware spread
count pairs of similar strings
min max game
difference between element sum and digit sum of an array
validate binary search tree
number of ways to divide a long corridor
minimum number of operations to make array continuous
minimum suffix flips
minimum time to collect all apples in a tree
reformat department table
happy number
maximum sum circular subarray
reward top k students
sender with largest word count
minimum sum of squared difference
super pow
decrease elements to make array zigzag
total cost to hire k workers
minimize result by adding parentheses to expression
longest continuous increasing subsequence
image smoother
max consecutive ones iii
count number of distinct integers after reverse operations
rearrange products table
make array strictly increasing
divisor game
nth digit
employees whose manager left the company
clone graph
number of beautiful partitions
minimum number of steps to make two strings anagram ii
call function with custom context
power of four
maximize the topmost element after k moves
minimum number of moves to make palindrome
probability of a two boxes having the same number of distinct balls
minimum increment to make array unique
minimum score by changing two elements
delete duplicate emails
number of subarrays with lcm equal to k
form array by concatenating subarrays of another array
constrained subsequence sum
valid phone numbers
best sightseeing pair
minimum path sum
angle between hands of a clock
minimum time to make rope colorful
maximum deletions on a string
find a value of a mysterious function closest to target
maximum count of positive integer and negative integer
maximum product subarray
change minimum characters to satisfy one of three conditions
remove palindromic subsequences
base 7
count nodes with the highest score
divide two integers
maximum twin sum of a linked list
arithmetic slices ii - subsequence
tuple with same product
shifting letters ii
number of unique good subsequences
number of sub-arrays with odd sum
widest vertical area between two points containing no points
find the score of all prefixes of an array
largest color value in a directed graph
toeplitz matrix
count the number of consistent strings
distinct prime factors of product of array
destroying asteroids
queens that can attack the king
monthly transactions i
last substring in lexicographical order
maximum number of weeks for which you can work
length of last word
maximum number of groups getting fresh donuts
map of highest peak
average waiting time
flip binary tree to match preorder traversal
maximum consecutive floors without special floors
maximum score words formed by letters
minimize xor
check if every row and column contains all numbers
longest valid parentheses
dinner plate stacks
map sum pairs
find median from data stream
node with highest edge score
stone game v
list the products ordered in a period
count special quadruplets
longest common prefix
how many numbers are smaller than the current number
lexicographically smallest string after applying operations
amount of time for binary tree to be infected
maximum number of occurrences of a substring
balance a binary search tree
minimum replacements to sort the array
closest dessert cost
word frequency
check if all 1's are at least length k places away
kth largest element in a stream
form smallest number from two digit arrays
palindrome partitioning iii
bulls and cows
find subsequence of length k with the largest sum
minimum number of swaps to make the string balanced
longest substring of all vowels in order
sqrt(x)
stone game vi
longest word in dictionary
minimum number of days to make m bouquets
dungeon game
minimum changes to make alternating binary string
minimum size subarray sum
maximum number of moves in a grid
reconstruct original digits from english
number of unique subjects taught by each teacher
minimum space wasted from packaging
rotate array
expressive words
smallest subsequence of distinct characters
queries on number of points inside a circle
minimize maximum pair sum in array
check if matrix is x-matrix
couples holding hands
maximum score of a node sequence
statistics from a large sample
number of sub-arrays of size k and average greater than or equal to threshold
final value of variable after performing operations
subdomain visit count
form largest integer with digits that add up to target
swim in rising water
number of valid words for each puzzle
find first and last position of element in sorted array
online majority element in subarray
check if it is a straight line
minimum difference in sums after removal of elements
distribute repeating integers
find words that can be formed by characters
memoize ii
text justification
number of adjacent elements with the same color
find unique binary string
the k strongest values in an array
replace all digits with characters
circle and rectangle overlapping
maximum number of words you can type
number of great partitions
chalkboard xor game
check knight tour configuration
two sum iv - input is a bst
combinations
cherry pickup ii
tallest billboard
number of subarrays with bounded maximum
count increasing quadruplets
count collisions of monkeys on a polygon
minimum index sum of two lists
find the winner of an array game
validate binary tree nodes
add digits
perfect rectangle
coin change ii
is subsequence
number of ways to paint n × 3 grid
pseudo-palindromic paths in a binary tree
minimum amount of time to collect garbage
the number of full rounds you have played
count good triplets in an array
remove element
replace employee id with the unique identifier
house robber
total appeal of a string
minimum operations to convert number
splitting a string into descending consecutive values
count the repetitions
eliminate maximum number of monsters
target sum
minimum moves to reach target with rotations
last stone weight
largest submatrix with rearrangements
longest zigzag path in a binary tree
sort the students by their kth score
mirror reflection
rank scores
score of parentheses
longest string chain
all elements in two binary search trees
find two non-overlapping sub-arrays each with target sum
k divisible elements subarrays
minimum lines to represent a line chart
evaluate division
substrings of size three with distinct characters
minimum cost to change the final value of expression
maximum number of events that can be attended ii
most popular video creator
next greater element iii
transpose matrix
selling pieces of wood
most beautiful item for each query
divide array in sets of k consecutive numbers
lexicographically smallest beautiful string
fraction to recurring decimal
minimum insertion steps to make a string palindrome
two out of three
grid illumination
maximum employees to be invited to a meeting
minimize hamming distance after swap operations
the number of good subsets
longest uncommon subsequence i
count number of maximum bitwise-or subsets
checking existence of edge length limited paths
recover the original array
find kth bit in nth binary string
maximum product difference between two pairs
spiral matrix ii
minimum common value
crawler log folder
minimum operations to make array equal
replace all ?'s to avoid consecutive repeating characters
sort the people
closest subsequence sum
minimum cost to split an array
shortest path visiting all nodes
find triangular sum of an array
merge k sorted lists
find eventual safe states
palindrome number
maximum path quality of a graph
maximum average subarray i
array with elements not equal to average of neighbors
find xor-beauty of array
2 keys keyboard
minimum operations to halve array sum
find the minimum and maximum number of nodes between critical points
push dominoes
number of substrings containing all three characters
zigzag conversion
largest values from labels
number of common factors
find the prefix common array of two arrays
maximum performance of a team
restaurant growth
serialize and deserialize binary tree
smallest subarrays with maximum bitwise or
determine the winner of a bowling game
minimum deletions to make character frequencies unique
coin change
minimum time to visit a cell in a grid
check if move is legal
swap adjacent in lr string
count of matches in tournament
determine if two strings are close
single number iii
3sum
linked list cycle ii
sort an array
minimum limit of balls in a bag
minimize the maximum difference of pairs
count unhappy friends
count hills and valleys in an array
count distinct numbers on board
count number of texts
abbreviating the product of a range
minimum incompatibility
remove outermost parentheses
zuma game
maximum side length of a square with sum less than or equal to threshold
populating next right pointers in each node
insert delete getrandom o(1) - duplicates allowed
partition array according to given pivot
maximum running time of n computers
find positive integer solution for a given equation
convert integer to the sum of two no-zero integers
max points on a line
generate parentheses
average value of even numbers that are divisible by three
sum of unique elements
distribute coins in binary tree
number of arithmetic triplets
greatest common divisor of strings
number of enclaves
string compression ii
max area of island
valid sudoku
balanced binary tree
count collisions on a road
course schedule
24 game
find the shortest superstring
add one row to tree
delete nodes and return forest
smallest even multiple
substring with concatenation of all words
design movie rental system
rank transform of an array
search a 2d matrix ii
number of increasing paths in a grid
nested array generator
percentage of users attended a contest
customer placing the largest number of orders
alternating digit sum
number of provinces
max sum of rectangle no larger than k
license key formatting
next greater numerically balanced number
implement magic dictionary
the number of weak characters in the game
product of the last k numbers
article views i
the dining philosophers
distant barcodes
length of the longest alphabetical continuous substring
find center of star graph
jump game v
guess the word
longest increasing path in a matrix
longest palindrome by concatenating two letter words
unique paths
game of life
count pairs of nodes
kth smallest number in multiplication table
heaters
minimize deviation in array
minimum number of people to teach
to lower case
maximum value of a string in an array
delete node in a linked list
all possible full binary trees
matrix diagonal sum
new 21 game
minimum cost to cut a stick
kth smallest instructions
ambiguous coordinates
calculate delayed arrival time
count palindromic subsequences
reformat the string
building h2o
smallest number in infinite set
leaf-similar trees
image overlap
average selling price
steps to make array non-decreasing
wildcard matching
longest increasing subsequence
check if one string swap can make strings equal
smallest value after replacing with sum of prime factors
unique length-3 palindromic subsequences
duplicate zeros
minimum consecutive cards to pick up
add strings
binary search tree to greater sum tree
count unreachable pairs of nodes in an undirected graph
construct binary tree from inorder and postorder traversal
orderly queue
magnetic force between two balls
design an atm machine
number of ways to reconstruct a tree
implement trie (prefix tree)
pancake sorting
reorder list
defuse the bomb
merge two sorted lists
number of subsequences that satisfy the given sum condition
k closest points to origin
decode string
best time to buy and sell stock ii
maximum and sum of array
count sorted vowel strings
task scheduler
project employees i
find the most competitive subsequence
previous permutation with one swap
longest uncommon subsequence ii
pizza with 3n slices
find nearest point that has the same x or y coordinate
print zero even odd
kth smallest element in a bst
sort even and odd indices independently
moving stones until consecutive
create maximum number
movie rating
find the longest balanced substring of a binary string
best time to buy and sell stock iii
k-th smallest prime fraction
1-bit and 2-bit characters
frequency tracker
out of boundary paths
number of islands
find peak element
invalid tweets
number of steps to reduce a number in binary representation to one
maximum number of pairs in array
minimum number of operations to move all balls to each box
convert an array into a 2d array with conditions
find the k-beauty of a number
shortest common supersequence
shortest path in a grid with obstacles elimination
move zeroes
minimize the maximum of two arrays
walking robot simulation ii
rings and rods
strong password checker ii
maximum subarray min-product
single number
row with maximum ones
mean of array after removing some elements
using a robot to print the lexicographically smallest string
valid arrangement of pairs
consecutive characters
sum of scores of built strings
sort items by groups respecting dependencies
range frequency queries
find duplicate subtrees
rectangle area ii
set intersection size at least two
disconnect path in a binary matrix by at most one flip
find all possible recipes from given supplies
h-index ii
longest mountain in array
prefix and suffix search
strictly palindromic number
linked list cycle
non-decreasing array
the k weakest rows in a matrix
ways to split array into three subarrays
path in zigzag labelled binary tree
reveal cards in increasing order
largest number
maximum or
find minimum in rotated sorted array
valid anagram
maximum enemy forts that can be captured
ipo
number of operations to make network connected
shuffle the array
count and say
escape a large maze
power of heroes
path crossing
guess number higher or lower
replace elements with greatest element on right side
shortest distance to a character
number of equivalent domino pairs
logical or of two binary grids represented as quad-trees
reverse vowels of a string
maximum binary string after change
array wrapper
knight dialer
maximum sum bst in binary tree
add two integers
remove duplicates from sorted array
integer replacement
a number after a double reversal
maximum number of points with cost
remove sub-folders from the filesystem
reverse words in a string
magical string
maximum sum of an hourglass
binary gap
diagonal traverse
minimum garden perimeter to collect enough apples
maximum product of the length of two palindromic subsequences
check if it is a good array
positions of large groups
maximum product of three numbers
ransom note
decode xored permutation
curry
delete duplicate folders in system
decode the slanted ciphertext
minimum hours of training to win a competition
create target array in the given order
jewels and stones
middle of the linked list
most frequent even element
perfect number
check if there is a valid path in a grid
course schedule iv
parsing a boolean expression
reverse prefix of word
intersection of two arrays
stickers to spell word
circular permutation in binary representation
largest number after digit swaps by parity
house robber iii
append characters to string to make subsequence
maximum number of non-overlapping palindrome substrings
insufficient nodes in root to leaf paths
bag of tokens
next greater element i
tag validator
optimal division
valid parenthesis string
shuffle string
minimum jumps to reach home
hand of straights
odd even linked list
largest rectangle in histogram
longest subarray with maximum bitwise and
count total number of colored cells
binary tree maximum path sum
sum of absolute differences in a sorted array
maximum score from performing multiplication operations
next greater element iv
construct binary tree from preorder and postorder traversal
design add and search words data structure
minimum falling path sum ii
delete characters to make fancy string
maximize palindrome length from subsequences
detect squares
smallest range ii
count elements with strictly smaller and greater elements
minimum falling path sum
simplified fractions
sudoku solver
maximum earnings from taxi
relative sort array
set matrix zeroes
island perimeter
preimage size of factorial zeroes function
most profitable path in a tree
number of good ways to split a string
max chunks to make sorted
find all duplicates in an array
longer contiguous segments of ones than zeros
restore the array
count of range sum
can you eat your favorite candy on your favorite day?
number of restricted paths from first to last node
minimum operations to make all array elements equal
alphabet board path
count lattice points inside a circle
step-by-step directions from a binary tree node to another
number of music playlists
maximum population year
count subarrays with fixed bounds
find the winner of the circular game
count subtrees with max distance between cities
beautiful array
trapping rain water
defanging an ip address
reverse bits
seat reservation manager
can make palindrome from substring
grumpy bookstore owner
generate a string with characters that have odd counts
minimum number of k consecutive bit flips
maximum number of balls in a box
duplicate emails
maximum product of word lengths
gcd sort of an array
split two strings to make palindrome
minimum score after removals on a tree
stone game ix
letter tile possibilities
subsequence with the minimum score
building boxes
car fleet
decompress run-length encoded list
kth distinct string in an array
lexicographically smallest equivalent string
minimum operations to make array equal ii
minimum ascii delete sum for two strings
search insert position
minimum time to remove all cars containing illegal goods
check whether two strings are almost equivalent
number of even and odd bits
string compression
top k frequent words
product sales analysis iii
sum of mutated array closest to target
find minimum time to finish all jobs
maximize grid happiness
find the substring with maximum cost
maximum ascending subarray sum
maximum score from removing substrings
root equals sum of children
fizz buzz multithreaded
find subarrays with equal sum
minimize the difference between target and chosen elements
sum of subsequence widths
determine if string halves are alike
evaluate reverse polish notation
minimum cost to make at least one valid path in a grid
number of ways of cutting a pizza
check if string is a prefix of array
sum of number and its reverse
sum of even numbers after queries
maximum value of k coins from piles
kth ancestor of a tree node
minimum cost tree from leaf values
keys and rooms
find total time spent by each employee
flip equivalent binary trees
first completely painted row or column
remove max number of edges to keep graph fully traversable
minimum time to complete trips
escape the spreading fire
repeated substring pattern
number of ways to reach a position after exactly k steps
first letter to appear twice
reconstruct a 2-row binary matrix
simple bank system
intervals between identical elements
find the array concatenation value
divide intervals into minimum number of groups
longest palindrome
plus one
stone game vii
maximize the minimum powered city
design cancellable function
minimum cost for tickets
maximum length of pair chain
find common characters
redistribute characters to make all strings equal
maximum profit of operating a centennial wheel
maximum units on a truck
partition array into disjoint intervals
solving questions with brainpower
sum of distances
n-ary tree level order traversal
construct the lexicographically largest valid sequence
differences between two objects
count sub islands
minimum sideway jumps
most visited sector in a circular track
min cost climbing stairs
number of different subsequences gcds
transpose file
maximum length of a concatenated string with unique characters
count complete tree nodes
maximum number of integers to choose from a range i
count ways to build rooms in an ant colony
even odd tree
shortest path with alternating colors
longest ideal subsequence
contiguous array
max sum of a pair with equal sum of digits
number of good leaf nodes pairs
is graph bipartite?
find the longest substring containing vowels in even counts
convert a number to hexadecimal
cycle length queries in a tree
string matching in an array
matchsticks to square
count numbers with unique digits
tiling a rectangle with the fewest squares
minimum insertions to balance a parentheses string
most frequent number following key in an array
convert sorted array to binary search tree
number of recent calls
number of 1 bits
jump game iii
count good nodes in binary tree
maximal score after applying k operations
maximum average pass ratio
binary search tree iterator
modify graph edge weights
minimum non-zero product of the array elements
make costs of paths equal in a binary tree
event emitter
minimum total cost to make arrays unequal
design a stack with increment operation
check distances between same letters
difference between ones and zeros in row and column
validate ip address
largest substring between two equal characters
loud and rich
sum of left leaves
binary tree pruning
matrix cells in distance order
sum of subarray minimums
add binary
reducing dishes
summary ranges
sum in a matrix
find the minimum number of fibonacci numbers whose sum is k
ugly number
maximum product of two elements in an array
pacific atlantic water flow
insert interval
split with minimum sum
incremental memory leak
majority element ii
apply discount to prices
invalid transactions
allow one function call
describe the painting
mice and cheese
minimum bit flips to convert number
minimum number of flips to convert binary matrix to zero matrix
flatten deeply nested array
count odd numbers in an interval range
find all numbers disappeared in an array
operations on tree
reverse pairs
best team with no conflicts
unique binary search trees
find the pivot integer
maximum product of the length of two palindromic substrings
maximum number of eaten apples
redundant connection
find palindrome with fixed length
max consecutive ones
minimum amount of time to fill cups
palindrome pairs
maximum profit in job scheduling
split array into fibonacci sequence
count asterisks
minimum swaps to group all 1's together ii
minimum absolute difference
merge intervals
add to array-form of integer
count equal and divisible pairs in an array
equal row and column pairs
shortest path to get all keys
count the number of vowel strings in range
repeated dna sequences
check if point is reachable
the number of employees which report to each employee
subrectangle queries
partition labels
count different palindromic subsequences
time needed to rearrange a binary string
get watched videos by your friends
make the string great
array of objects to matrix
string to integer (atoi)
number of ways to arrive at destination
market analysis i
lexicographically smallest palindrome
partition array such that maximum difference is k
spiral matrix iv
make k-subarray sums equal
fraction addition and subtraction
total hamming distance
binary tree cameras
maximum absolute sum of any subarray
cat and mouse ii
number of squareful arrays
k radius subarray averages
maximum binary tree
construct string from binary tree
most profit assigning work
reconstruct itinerary