Leetcode 反转字符串
地址:https://leetcode-cn.com/explore/interview/card/top-interview-questions-easy/5/strings/32/
题目
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"]
我的解决方案
挺简单的,就是用一个临时变量temp
做前后兑换。
class Solution {
public:
void reverseString(vector<char>& s) {
int n = s.size();
for (int i = 0; i < n / 2; i++) {
char temp = s[i];
s[i] = s[n - 1 - i];
s[n - 1 - i] = temp;
}
}
};
Leetcode 反转字符串
https://mxy493.xyz/2019013061953/