344.Reverse String

question:

Write a function that takes a string as input and returns the string reversed.

Example:
Given s = "hello", return "olleh".

answer：

交换字符串中的元素

class Solution {
public:string reverseString(string s) {int l = s.length();int i;char tem;for(i=0;i<l/2;i++){tem = s[i];s[i] = s[l-1-i];s[l-1-i] = tem;}return s;}
};

转载于:https://www.cnblogs.com/Reindeer/p/5624687.html

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