public void VerifyPeekInQueue()
{
var actual = new QueueUsingArray(3);
actual.Enqueue(12);
actual.Enqueue(14);
actual.Enqueue(16);
Assert.AreEqual(3, actual.Count());
var value = actual.Peek();
Assert.AreEqual(12, value);
Assert.AreEqual(3, actual.Count());
}
public void Peek()
{
QueueUsingArray <int> queue = new QueueUsingArray <int>();
queue.Enqueue(10);
queue.Enqueue(20);
queue.Enqueue(30);
queue.Enqueue(40);
//10 <- 20 <- 30 <- 40
queue.Dequeue();
queue.Dequeue();
//30 <- 40
Assert.AreEqual(queue.Peek(), 30);
}