| 3 | public class QueueExample { |
| 4 | |
| 5 | public static void main(String[] args) { |
| 6 | { |
| 7 | ArrayQueue<Integer> queue = new ArrayQueue<>(3); |
| 8 | |
| 9 | queue.enqueue(5); |
| 10 | queue.enqueue(3); |
| 11 | |
| 12 | System.out.println(queue.size()); // 2 |
| 13 | System.out.println(queue.dequeue()); // 5 |
| 14 | System.out.println(queue.isEmpty()); // false |
| 15 | System.out.println(queue.dequeue()); // 3 |
| 16 | System.out.println(queue.isEmpty()); // true |
| 17 | System.out.println(queue.dequeue()); // null |
| 18 | |
| 19 | queue.enqueue(7); |
| 20 | queue.enqueue(9); |
| 21 | |
| 22 | System.out.println(queue.peek()); // 7 |
| 23 | |
| 24 | queue.enqueue(4); |
| 25 | |
| 26 | System.out.println(queue.dequeue()); // 7 |
| 27 | } |
| 28 | { |
| 29 | LinkedQueue<Integer> queue = new LinkedQueue<>(); |
| 30 | |
| 31 | queue.enqueue(5); |
| 32 | queue.enqueue(3); |
| 33 | |
| 34 | System.out.println(queue.size()); // 2 |
| 35 | System.out.println(queue.dequeue()); // 5 |
| 36 | System.out.println(queue.isEmpty()); // false |
| 37 | System.out.println(queue.dequeue()); // 3 |
| 38 | System.out.println(queue.isEmpty()); // true |
| 39 | System.out.println(queue.dequeue()); // null |
| 40 | |
| 41 | queue.enqueue(7); |
| 42 | queue.enqueue(9); |
| 43 | |
| 44 | System.out.println(queue.peek()); // 7 |
| 45 | |
| 46 | queue.enqueue(4); |
| 47 | |
| 48 | System.out.println(queue.dequeue()); // 7 |
| 49 | } |
| 50 | } |
| 51 | } |