编写一个函数,其作用是将输入的字符串反转过来。输入字符串以字符数组 char[]
的形式给出。
不要给另外的数组分配额外的空间,你必须原地修改输入数组、使用 O(1) 的额外空间解决这一问题。
你可以假设数组中的所有字符都是 ASCII 码表中的可打印字符。
示例 1:
输入:["h","e","l","l","o"] 输出:["o","l","l","e","h"]
示例 2:
输入:["H","a","n","n","a","h"] 输出:["h","a","n","n","a","H"]
题目标签:Two Pointers / String
题目链接:LeetCode / LeetCode中国
Language | Runtime | Memory |
---|---|---|
python3 | 44 ms | N/A |
class Solution:
def reverseString(self, s):
"""
:type s: str
:rtype: str
"""
return s[::-1]