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1. Reverse Words in a String

Reverse Words in a String

 

Given an input string, reverse the string word by word.

For example,
Given s = "the sky is blue",
return "blue is sky the".

click to show clarification.

Clarification:

 

  • What constitutes a word?
    A sequence of non-space characters constitutes a word.
  • Could the input string contain leading or trailing spaces?
    Yes. However, your reversed string should not contain leading or trailing spaces.
  • How about multiple spaces between two words?
    Reduce them to a single space in the reversed string.
 
 
 

class Solution:
def reverseWords(self, s):
  if s is None or s == ‘‘:
  return ‘‘

  temp_list = s.split()
  t = ‘‘
  for i in range(len(temp_list)-1, -1, -1):
    t += temp_list[i]
    t += ‘ ‘

  t = t[:len(t)-1]
  return t

if __name__ == ‘__main__‘:
  a = Solution()
  print a.reverseWords(‘the sky is blue‘)

1. Reverse Words in a String