public void Test()
{
var pq = new IndexMinPQ <int>(10);
pq.Enqueue(1, 20);
pq.Enqueue(2, 15);
Assert.Equal(15, pq.MinKey());
pq.Enqueue(1, 10);
Assert.Equal(10, pq.MinKey());
pq.Enqueue(3, 11);
Assert.Equal(1, pq.DelMin());
Assert.Equal(11, pq.MinKey());
Assert.Equal(2, pq.Count);
Assert.False(pq.IsEmpty);
pq.Enqueue(2, 10);
Assert.Equal(10, pq.MinKey());
Assert.Equal(2, pq.DelMin());
foreach (var v in pq)
{
console.WriteLine("key: {0}", v);
}
}