java024StringBuilder练习之字符串反转练习

package day01;

import java.util.Scanner;

//字符串反转练习

public class StringBuilderTest3 {

public static void main(String[] args) {

Scanner sc = new Scanner(System.in);

System.out.println("请输入一个字符串");

String s = sc.nextLine();

//写方法实现反转

String result = myReverse(s);

System.out.println("result:"+result);

}

public static String myReverse(String s){

//要实现反转想要调用revese方法就得先将String类型转换成StringBuilder类型然后写方法最后在转为String类型

StringBuilder sb = new StringBuilder(s);

sb.reverse();

String result = sb.toString();

return result;

}

}

运行结果