344. Reverse String LeetCode 解题

344. Reverse String

Difficulty: Easy

Write a function that takes a string as input and returns the string reversed.

    Example:
    Given s = "hello", return "olleh".

 

代码：

 

public class Solution {
    public String reverseString(String s) {
        char[] sArray = s.toCharArray();
        int length = sArray.length;     
        for (int i = 0; i < length/2; i ++) {
            char temp = sArray[i];
            int position = length - 1 - i;
            sArray[i] = sArray[position];
            sArray[position] = temp;
        }
        return new String(sArray);
    }
}

 总觉得这个代码效率有点低，如果有更快的解决方法，欢迎交流啊。