@Test(expected = NoSuchElementException.class) public void basicTest3() { QueueByTwoStack<String> queue = new QueueByTwoStack(); queue.peek(); }
public Item peek() { return null; }
QueueByTwoStack { public Item peek() { return null; } }
QueueByTwoStack { public Item peek() { return null; } QueueByTwoStack(); }
QueueByTwoStack { public Item peek() { return null; } QueueByTwoStack(); int size(); boolean isEmpty(); void enqueue(Item i); Item dequeue(); Item peek(); }
QueueByTwoStack { public Item peek() { return null; } QueueByTwoStack(); int size(); boolean isEmpty(); void enqueue(Item i); Item dequeue(); Item peek();  }