java小程序

显示全部楼层 · 2010-4-14 14:05:48

import java.util.ArrayList;import java.util.Collections;import java.util.HashSet;import java.util.Iterator;import java.util.List;import java.util.Set;public class Doubleball { public static void main(String[] args) {Set redball=null;int i=0;while(i<=20){ redball=new HashSet(); do{
redball.add((int) (Math.random() * 33 + 1)); }while(redball.size()<6); List list=new ArrayList(); Iterator iterator=redball.iterator(); while(iterator.hasNext()){
list.add(iterator.next()); } Collections.sort(list); System.out.print("第"+i+"组红球："+list); System.out.println("蓝球：[ " + (int) (Math.random() * 16 + 1)+" ]"); i++;} }}