import java.util.Arrays;
/*
*随机生成一组双色球
双色球原理:
随机生成六个红球(1-33),然后排序(用冒泡排序法),再生成一个篮球(1-16)
球池{"01","02","03",…………………………,"32","33"}
*
*/
public class DoubleColorBall {
public static void main(String[] args) {
String[] str = {"01","02","03","04","05","06","07","08","09","10","11","12","13","14","15","16","17","18","19","20","21","22","23","24","25","26","27","28","29","30","31","32","33"};
String[] contains = randomArr(str);
System.out.println(Arrays.toString(contains));
Arrays.sort(contains);//排序
contains = Arrays.copyOf(contains, contains.length+1);//将红色球池中的位置扩容一位。
int index = (int)(Math.random()*16);
contains[contains.length-1] = str[index];//将蓝色球存入球池中,完成双色球。
System.out.println(Arrays.toString(contains));
}
public static String[] randomArr(String[] str) {
String[] redPool = new String[6];
boolean[] bol = new boolean[str.length];//给球池里的每个球都默认标价为false
for(int i=0;i<redPool.length;i++) {
int index = (int)(Math.random()*33);//随机产生一个球的下边索引
if(bol[index] == true) {//先判断这个球标价是否改变
i--;
continue;
}
redPool[i] = str[index];//执行到这步说明没改变。将球中的值存入红球池中。
bol[index] = true;//将存储完的球标记改为true
}
return redPool;
}
}