java怎么随机输入四种花色_输入n种口味随机输出四种不同的口味！

#用到了一个Random的类。

import java.util.Random;

public class GetIceCream {

public static void main(String[] args) {

String[] iceCream = new String[] { "香蕉", "草莓", "香芋", "巧克力", "奶油", "咖啡" };//可以换成不同数量的口味

String[] getIceCream = getIce(iceCream);

System.out.println();

System.out.print("随机四种口味: ");

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

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

}

}

public static String[] getIce(String[] iceCream) {

String[] getIceCream = new String[4];

boolean[] autoGet = new boolean[6];// 创建使用状态

Random rand = new Random();// 随机取下标

for (int num = 0; num < getIceCream.length; num++) {

int a = rand.nextInt(autoGet.length);

if (!autoGet[a]) {//判断是否为false，如果为true，则退回上一个，再循环

getIceCream[num] = iceCream[a];

// System.out.print(a+" ");

autoGet[a] = true;// 选中的改为true

} else { //衔接上方

num--;

}

}

// 获取什么口味没被选中

for (

int i = 0; i < autoGet.length; i++) {

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

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

}

return getIceCream;

}

}