1.[代码]java彩票例子

import java.util.HashSet; //自动过滤重复的集合

import java.util.Random;

public class LuckyTic {

public static void main(String[] args) {

// TODO Auto-generated method stub

HashSet hs = new HashSet();

Random r = new Random();

int num = r.nextInt();// 用于下面静态或动态

int[] tic = new int[7];// 用于下面静态或动态

for (;;) {

int temp = r.nextInt(44) + 1;

hs.add(temp + " ");

if (hs.size() == 7)

break;

}

System.out.println(hs);

System.out.println("*************");//分隔符

// 动态

int[] temp = new int[33];

for (int i = 0; i < 33; i++) {

temp[i] = i + 1;

}

for (int i = 0; i < tic.length; i++) {

int k = r.nextInt(temp.length - i);

tic[i] = temp[k];

temp[k] = temp[temp.length - i - 1];

System.out.print(tic[i] + " ");

}

// 动态

System.out.println("\n"+"*************");//分隔符

// 静态

for (int i = 0; i < tic.length; i++) {

tic[i] = r.nextInt(32) + 1;

for (int j = 0; j < i; j++) {

if (tic[i] == tic[j]) {

i--;

break;

}

}

}

for (int i = 0; i < tic.length; i++) {

System.out.print(tic[i] + " ");

}

// 静态

}

}