题目描述
LeetCode 344. 反转字符串 https://leetcode-cn.com/problems/reverse-string/description/
请编写一个函数, 其功能是将输入的字符串反转过来.
示例
输入: s = "hello"
返回:"olleh"
- Code
- Java
- class Solution {public String reverseString(String s) {
- if (s == null || s.length() <= 1) {
- return s;
- }
- char[] arr = s.toCharArray();
- int length = arr.length;
- for (int i = 0; i < length / 2; i++) {
- char temp = arr[i];
- arr[i] = arr[length - i - 1];
- arr[length - i - 1] = temp;
- }
- return String.valueOf(arr);
- //return new StringBuilder(s).reverse().toString();
- }
- }
- LeetCode 344. Reverse String(反转字符串)
来源: http://www.bubuko.com/infodetail-2587865.html