java-HJ12_字符串反转

java - HJ12 字符串反转

import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        String inputStr = in.nextLine();

        // StringBuffer reverse()
        StringBuffer inputStrBuffer = new StringBuffer(inputStr);
        inputStrBuffer.reverse();
        System.out.print(inputStrBuffer);

        // StringBuilder reverse()
        // StringBuilder inputStrBuilder = new StringBuilder(inputStr);
        // inputStrBuilder.reverse();
        // System.out.print(inputStrBuilder);
    }
}