猜数字游戏代码优化

package com.cfqp;

import java.util.Random;
import java.util.Scanner;

//猜数字游戏代码优化版
public class demo51 {
    public static void main(String[] args) {
        Random r = new Random();
        int [] arr = new int[5];
        for (int i = 0; i < arr.length; i++) {
            int i1 = r.nextInt(20) + 1;
            arr[i]=i1;
        }
        Scanner sc = new Scanner(System.in);

        OUT:
        while(true){
            System.out.println("请输入你猜的数字：");
            int i = sc.nextInt();
            for (int i1 = 0; i1 < arr.length; i1++) {
                if(i==arr[i1]){
                    System.out.println("数据的第一个位序为："+(i1+1));
                    System.out.println("运气不错，猜中了");
                    break OUT;   //结束整个While循环
                }
            }
            System.out.println("猜错了，请继续！！！");
        }
        System.out.println("随机生成的5个数为：");
        for (int i = 0; i < arr.length; i++) {
            System.out.print(arr[i]+"\t");
        }
    }
}