字符串反转

public class StringTest05 {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.println("请输入一个字符串：");
        String line = sc.nextLine();

        String s = reverse(line);
        System.out.println(s);

    }

    public static String reverse(String s) {
        String ss = "";

        for (int i = s.length() - 1; i >= 0; i--) {
            ss += s.charAt(i);
        }

        return ss;
    }
}