/**
* 三、洗牌(Shuffle)
* @param args
*/
public void shuffle(){
System.out.println("------------开始洗牌...---------------");
Collections.shuffle(cardsToSelect);//这句是什么意思
System.out.println("------------洗牌结束-------------");
//测试是否洗牌成功,同时给元素分配id
int i = 0;
for (Cards cards : cardsToSelect) {
cards.id = i;
//System.out.println(cards.id+":"+cards.name);
i++;
}
}
3 回答
大咪
TA貢獻785條經驗 獲得超332個贊
????@Test
????public?void?shuffle(){
????????
????????List<Integer>?cardsToSelect?=?new?ArrayList<Integer>();
????????cardsToSelect.add(1);
????????cardsToSelect.add(2);
????????cardsToSelect.add(3);
????????cardsToSelect.add(4);
????????for?(Integer?integer?:?cardsToSelect)?{
????????????System.out.print("洗牌之前的集合值："?+?integer?+?"??");
????????}
????????System.out.println();
????????System.out.println("------------開始洗牌...---------------");
????????Collections.shuffle(cardsToSelect);//這句是什么意思
????????
????????for?(Integer?integer?:?cardsToSelect)?{
????????????System.out.print("洗牌之后的集合值："?+?integer?+?"??");
????????}
????????System.out.println();
????????System.out.println("------------洗牌結束-------------");
????}
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