LeetCode - 反轉字符串

題目

請編寫一個函數，其功能是將輸入的字符串反轉過來。

示例：

輸入：s = "hello"
返回："olleh"

解法

很簡單的一道題目

https://github.com/biezhihua/LeetCode

@Test
public void test() {
    Assert.assertEquals("olleh", reverseString("hello"));
    Assert.assertEquals("auhihzeib", reverseString("biezhihua"));

}

public String reverseString(String s) {
    return new StringBuffer(s).reverse().toString();
}

@Test
public void test1() {
    Assert.assertEquals("olleh", reverseString1("hello"));
    Assert.assertEquals("auhihzeib", reverseString1("biezhihua"));

}

public String reverseString1(String s) {

    char[] chars = s.toCharArray();
    for (int i = 0; i < chars.length / 2; i++) {
        char tmp = chars[i];
        chars[i] = chars[chars.length - 1 - i];
        chars[chars.length - 1 - i] = tmp;
    }

    return new String(chars);
}
}