public void RandomAddRemoveTest()
{
const int NUMBERS_TO_ADD = 200;
MyAVLTREE <int, string> myAVLTREE = new MyAVLTREE <int, string>();
List <int> addedValues = new List <int>();
Random random = new Random(System.DateTime.Now.Millisecond.GetHashCode());
for (int i = 0; i < NUMBERS_TO_ADD; i++)
{
int randomNumber = random.Next(100);
myAVLTREE.Add(randomNumber, "");
addedValues.Add(randomNumber);
Assert.That(myAVLTREE.Height(), Is.LessThan(MaxHeight(myAVLTREE) + 1), $"Add from: {string.Join(",", addedValues)}");
}
var allAdded = addedValues.ToArray();
List <int> removedIndeces = new List <int>();
while (addedValues.Count > 0)
{
int rnd = random.Next(addedValues.Count());
removedIndeces.Add(rnd);
int toRemove = addedValues[rnd];
addedValues.RemoveAt(rnd);
myAVLTREE.Remove(toRemove);
Assert.That(myAVLTREE.Height(), Is.LessThan(MaxHeight(myAVLTREE) + 1), $"Removed indices from {string.Join(",", addedValues)}: {string.Join(",", removedIndeces)}");
}
}
public void TestNoDegeneratedAdd()
{
var tree = new MyAVLTREE <int, int>();
foreach (var value in Enumerable.Range(0, 100))
{
tree.Add(value, value);
Assert.That(tree.Height, Is.LessThan(MaxHeight(tree) + 1));
}
}
static void Main(string[] args)
{
MyAVLTREE <int, string> myAVLTREE = new MyAVLTREE <int, string>();
myAVLTREE.Add(7, "");
myAVLTREE.Add(7, "");
myAVLTREE.Add(7, "");
myAVLTREE.Add(4, "");
myAVLTREE.Add(2, "");
myAVLTREE.Add(3, "");
}
public void TestRotateRightLeft()
{
MyAVLTREE <int, string> myAVLTREE = new MyAVLTREE <int, string>();
myAVLTREE.Add(3, "");
myAVLTREE.Add(5, "");
myAVLTREE.Add(4, "");
Assert.That(myAVLTREE.Root.Key, Is.EqualTo(4));
Assert.That(myAVLTREE.Root.Left.Key, Is.EqualTo(3));
Assert.That(myAVLTREE.Root.Right.Key, Is.EqualTo(5));
Assert.That(Math.Log(myAVLTREE.Count() + 1, 2) <= myAVLTREE.Height(), Is.EqualTo(true));
}
public void Test1()
{
List <int> list = new List <int>()
{
79, 67, 82, 39, 10, 71, 96
};
MyAVLTREE <int, int> myAVLTREE = new MyAVLTREE <int, int>();
foreach (int value in list)
{
myAVLTREE.Add(value, value);
}
}
public void TestDelete1()
{
MyAVLTREE <int, string> myAVLTREE = new MyAVLTREE <int, string>();
myAVLTREE.Add(10, "");
myAVLTREE.Add(8, "");
myAVLTREE.Add(13, "");
myAVLTREE.Add(11, "");
myAVLTREE.Add(14, "");
myAVLTREE.Remove(8);
Assert.That(myAVLTREE.Root.Left.Key, Is.EqualTo(10));
Assert.That(myAVLTREE.Root.Right.Key, Is.EqualTo(14));
Assert.That(myAVLTREE.Height, Is.EqualTo(3));
}
private int MaxHeight <Key, Value>(MyAVLTREE <Key, Value> tree) where Key : IComparable <Key>
{
return((int)Math.Floor(1.44 * Math.Log(tree.Count() + 2, 2) - .328));
}
