java数组实现买彩票（通过标识符进行判断的思想）

Posted 2020-08-09

 1 package com.wh.shuzu;
 2 
 3 import java.util.Random;
 4 import java.util.Scanner;
 5 /**
 6  * 买彩票
 7  * @author 王拥江同学
 8  * 加一个标识符的重新判断
 9  */
10 public class Lotery4 {
11 
12     public static void main(String[] args) {
13         Scanner input = new Scanner(System.in);
14         Random ran = new Random();
15         int cq[] = new int[5];
16         int a = 0;//数组cq的下表
17         int b = 0;//标识符    判断是否有重复
18         for (;;) {
19             b = 0;
20             int bb = ran.nextInt(11) + 1;
21             //查重
22             for (int i = 0; i < cq.length; i++) {
23                 if (cq[i] != 0 && cq[i] == bb) {
24                     b = 1;
25                     break;
26                 }
27             }
28             //判断标识符
29             if (b == 1) {
30                 continue;
31             }
32             //赋值
33             if (cq[a] == 0) {
34                 cq[a] = bb;
35                 a++;
36             }
37             //是否为最后一次循环
38             if (a == 5) {
39                 break;
40             }
41         }
42         //遍历输出前五个数
43         for (int i = 0; i < cq.length; i++) {
44             System.out.println(cq[i]);
45         }
46     }
47 }