【第四天打卡。

In&Out

public class test {
    public static void main(String[] args) {
        Out out = new Out(args[args.length - 1]);
        for (int i = 0; i < args.length - 1; i ++) {
            In in = new In(args[i]);
            String s = in.readAll();
            out.println(s);
            in.close();
        }
        out.close();
    }
}

APIs

BAG

public class Bag<Item> implements Iterable<Item> {
    Bag();
    void add(Item item);
    boolean isEmpty();
    int size();
}

QUEUE

public class Queue<Item> implements Interable<Item> {
    Queue();
    void enqueue(Item item);
    Item dequeue();
    boolean isEmpty();
    int size();
}