StringCase.rb

=begin

Write a function toWeirdCase (weirdcase in Ruby) that accepts a string, and
returns the same string with all even indexed characters in each word upper
cased, and all odd indexed characters in each word lower cased. The indexing
just explained is zero based, so the zero-ith index is even, therefore that
character should be upper cased.

The passed in string will only consist of alphabetical characters and
spaces(' '). Spaces will only be present if there are multiple words.
Words will be separated by a single space(' ').

Examples:

weirdcase( "String" )#=> returns "StRiNg"
weirdcase( "Weird string case" );#=> returns "WeIrD StRiNg CaSe"

=end

# My Solution
def weirdcase string
  result = ""
  i = 0
  string.split("").each_with_index do |x|
    i.even? ? result += x.upcase : result += x.downcase
    x != " " ? i += 1 : i = 0
  end
  result
end

# Better Solution
def weirdcase string
  string.gsub(/(\w{1,2})/) { |s| $1.capitalize }
end