344. Reverse String

阿新 • • 發佈：2017-09-19

使用 left return reverse nbsp clas spa while c語言

思路：

直接首尾來進行置換即可，以前在C語言中可以直接使用指針，在返回的時候使用默認的構造方法，不然會超時。

class Solution {
    public String reverseString(String str) {
        char[] s = str.toCharArray();
        int left = 0, right = s.length - 1;
        while (left < right) {
            char t = s[left];
            s[left++] = s[right];
            s[right 
--] = t;
        }
        return new String(s);
    }
}

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