同时循环遍历哈希集和数组列表

Question

for (int i = 0; i < numberOfPlayers; i++) {
        players.add(new HashSet<>());
    }

for (int i = 0; i < numberOfPlayers; i++) {
        amount.add(new ArrayList<>());
    } //this is the arraylist that stores the score

 for (HashSet<Integer> player : players) {
        player = userLottery(player);
    } // to access the individual hashSets

for (ArrayList<Integer> total : totalScore) {
        storage.add(total); 
    } // to access the individual hashSets

Answer 1

据我所知，您将这两个集合的值用于不同的任务。因此，我建议用两个循环来遍历这两个循环。

您能分享更多的代码和您想要实现的目标吗？

int numberOfPlayers = 10;
ArrayList<Player> players = new ArrayList<>();

//generate Players
for (int i = 0; i < numberOfPlayers; i++) {
    players.add(new Player());
}
        
//lottery for player
for(int i = 0; i < players.size(); i++){
    Player player = players.get(i);
    player = useLottery(player);
    players.set(i, player);
}

和玩家定义为

class Player{
    int score;
    //... other attributes
}