编写一个函数, 其作用是将输入的字符串反转过来.
示例 1:
输入: "hello"
输出: "olleh"
示例 2:
输入: "A man, a plan, a canal: Panama"
输出: "amanaP :lanac a ,nalp a ,nam A"
- class Solution:
- def reverseString(self, s):
- """
- :type s: str
- :rtype: str
- """
- #return s[::-1]
- start = 0
- end = len(s)-1
- tmp=[i for i in s]
- while start < end:
- tmp[start],tmp[end] = tmp[end],tmp[start]
- start+=1
- end-=1
- return ''.join(tmp)
来源: http://www.bubuko.com/infodetail-2741083.html