Java | Leetcode Java题解之第541题反转字符串II

题目：

题解：

class Solution {public String reverseStr(String s, int k) {int n = s.length();char[] arr = s.toCharArray();for (int i = 0; i < n; i += 2 * k) {reverse(arr, i, Math.min(i + k, n) - 1);}return new String(arr);}public void reverse(char[] arr, int left, int right) {while (left < right) {char temp = arr[left];arr[left] = arr[right];arr[right] = temp;left++;right--;}}
}