【leetcode】344. 反转字符串

【leetcode】344. 反转字符串

c++版本：

class Solution {
public:
    void reverseString(vector<char>& s) {
        //定义数组头指针
        int i = 0;
        //定义数组尾指针
        int j = s.size() - 1;
        while(i < j){
            //交换头尾指针元素
            char temp = s[i];
            s[i] = s[j];
            s[j] = temp;
            //头指针后移
            i++;
            //尾指针前移
            j--;
        }
    }
};

class Solution {
public:
    void reverseString(vector<char>& s) {
        int l = 0, r = s.size() - 1;
        while(l < r){
            swap(s[l], s[r]);
            l++; r--;
        }
    }
};

python版本：

class Solution:
    def reverseString(self, s: List[str]) -> None:
        """
        Do not return anything, modify s in-place instead.
        """
        for i in range(len(s)//2):
            s[i], s[len(s) - 1 - i] = s[len(s) - 1 - i], s[i]