生成随机彩票

package java2;

import java.util.Arrays;
import java.util.Random;

public class lottery_ticket {

  public static void main(String[] args) {
    int s = 35;
    int z = 7;
    System.out.println(Arrays.toString(ticket(s,z)));
  }

  static int[] ticket(int a,int b) {     
    Random random = new Random();
    int[] x = new int[b];           //定义一个长度为b的数组
    for(int i=0;i<x.length;i++) {
    x[i] = random.nextInt(a)+1;    //随机生成大于等于1,小于等于a的整数,进行赋值
      for(int j=0;j<i;j++) {     //去重
        if(x[i] == x[j]) {
          i--;
          break;
        }
      }
    }
    Arrays.sort(x);               //排序
    return x;
  }

}

  

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转载自www.cnblogs.com/wangsihui/p/11876985.html