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C15 Alison McGinley Stacks & Queues #32

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Stacks and Queues

Thanks for doing some brain yoga. You are now submitting this assignment!

Comprehension Questions

Question Answer
What is an ADT?
Describe a Stack
What are the 5 methods in Stack and what does each do?
Describe a Queue
What are the 5 methods in Queue and what does each do?
What is the difference between implementing something and using something?

OPTIONAL JobSimulation

Question Answer
Did you include a sample run of your code as a comment?

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@CheezItMan CheezItMan left a comment

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Nice work Alison, you hit the learning goals here. Well done.

Comment on lines +26 to +35
if self.size == self.buffer_size:
raise QueueFullException('Queue is full')

if self.front == -1:
self.front = 0

self.rear = (self.rear + 1) % self.buffer_size
self.size += 1

self.store[self.rear] = element

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👍

Comment on lines +43 to +55
if self.size == 0:
raise QueueEmptyException('Queue is empty')
if self.size == 1:
self.rear = -1

value = self.store[self.front]
self.store[self.front] = None

self.front = self.front + 1 % self.buffer_size

self.size -= 1

return value

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👍

Comment on lines +63 to +66
if self.size == 0:
return QueueEmptyException('Queue is empty')

return self.front

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👍

Comment on lines +87 to +93
values = []

for i in range(self.front, self.front+self.size):
i %= self.buffer_size
values.append(self.store[i])

return str(values)

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👍 Nice

@@ -12,7 +12,7 @@ def push(self, element):
""" Adds an element to the top of the Stack.

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👍 Stack looks good!

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2 participants