deque.push(1)
deque.push(2)
deque.push(3)
+ expect(deque.size).toBe(3)
expect(deque.peekFirst()).toBe(1)
+ expect(deque.size).toBe(3)
})
it('Verify peekLast() behavior', () => {
deque.push(1)
deque.push(2)
deque.push(3)
+ expect(deque.size).toBe(3)
expect(deque.peekLast()).toBe(3)
+ expect(deque.size).toBe(3)
})
it('Verify clear() behavior', () => {