LeetCode

344. 反转字符串

思路

题解

var reverseString = function (s) {
    let left = 0;
    let right = s.length - 1;

    while (left < right) {
       // 交换两个元素
        [s[left], s[right]] = [s[right], s[left]];
        left++;
        right--;
    }

    return s;
};