public void IsLeaf()
{
var A = new MockBinaryTreeNode <int, string>(50, "A");
var B = new MockBinaryTreeNode <int, string>(20, "B");
var C = new MockBinaryTreeNode <int, string>(10, "C");
var D = new MockBinaryTreeNode <int, string>(40, "D");
var E = new MockBinaryTreeNode <int, string>(30, "E");
A.Parent = null;
A.LeftChild = B;
A.RightChild = null;
B.Parent = A;
B.LeftChild = C;
B.RightChild = D;
C.Parent = B;
C.LeftChild = null;
C.RightChild = null;
D.Parent = B;
D.LeftChild = E;
D.RightChild = null;
E.Parent = D;
E.LeftChild = null;
E.RightChild = null;
Assert.IsFalse(A.IsLeaf());
Assert.IsFalse(B.IsLeaf());
Assert.IsTrue(C.IsLeaf());
Assert.IsFalse(D.IsLeaf());
Assert.IsTrue(E.IsLeaf());
}
public void GetUncle()
{
var A = new MockBinaryTreeNode <int, string>(8, "A");
var B = new MockBinaryTreeNode <int, string>(2, "B");
var C = new MockBinaryTreeNode <int, string>(10, "C");
var D = new MockBinaryTreeNode <int, string>(9, "D");
A.Parent = null;
A.LeftChild = B;
A.RightChild = C;
B.Parent = A;
B.LeftChild = null;
B.RightChild = null;
C.Parent = A;
C.LeftChild = D;
C.RightChild = null;
D.Parent = C;
D.LeftChild = null;
D.RightChild = null;
Assert.IsTrue(A.GetUncle() == null);
Assert.IsTrue(B.GetUncle() == null);
Assert.IsTrue(C.GetUncle() == null);
Assert.IsTrue(D.GetUncle().Equals(B));
}
public void FormsTriangle()
{
var A = new MockBinaryTreeNode <int, string>(50, "A");
var B = new MockBinaryTreeNode <int, string>(30, "B");
var C = new MockBinaryTreeNode <int, string>(20, "C");
var D = new MockBinaryTreeNode <int, string>(40, "D");
var E = new MockBinaryTreeNode <int, string>(35, "E");
var F = new MockBinaryTreeNode <int, string>(45, "F");
var G = new MockBinaryTreeNode <int, string>(47, "G");
var H = new MockBinaryTreeNode <int, string>(25, "h");
A.Parent = null;
A.LeftChild = B;
A.RightChild = null;
B.Parent = A;
B.LeftChild = C;
B.RightChild = D;
C.Parent = B;
C.LeftChild = null;
C.RightChild = H;
D.Parent = B;
D.LeftChild = E;
D.RightChild = F;
E.Parent = D;
E.LeftChild = null;
E.RightChild = null;
F.Parent = D;
F.LeftChild = null;
F.RightChild = G;
G.Parent = F;
G.LeftChild = null;
G.RightChild = null;
H.Parent = C;
H.LeftChild = null;
H.RightChild = null;
Assert.IsFalse(A.FormsTriangle());
Assert.IsFalse(B.FormsTriangle());
Assert.IsFalse(C.FormsTriangle());
Assert.IsTrue(D.FormsTriangle());
Assert.IsTrue(E.FormsTriangle());
Assert.IsFalse(F.FormsTriangle());
Assert.IsFalse(G.FormsTriangle());
Assert.IsTrue(H.FormsTriangle());
}
public void IsComplete()
{
var node1 = new MockBinaryTreeNode <int, string>(10, "str1")
{
LeftChild = null,
RightChild = null
};
Assert.IsFalse(node1.IsComplete());
node1.LeftChild = new MockBinaryTreeNode <int, string>(5, "str2");
Assert.IsFalse(node1.IsComplete());
node1.RightChild = new MockBinaryTreeNode <int, string>(15, "str3");
Assert.IsTrue(node1.IsComplete());
}
public void GetGrandParent()
{
var A = new MockBinaryTreeNode <int, string>(50, "A");
var B = new MockBinaryTreeNode <int, string>(30, "B");
var C = new MockBinaryTreeNode <int, string>(20, "C");
var D = new MockBinaryTreeNode <int, string>(40, "D");
var E = new MockBinaryTreeNode <int, string>(35, "E");
var F = new MockBinaryTreeNode <int, string>(45, "F");
var G = new MockBinaryTreeNode <int, string>(47, "G");
A.Parent = null;
A.LeftChild = B;
A.RightChild = null;
B.Parent = A;
B.LeftChild = C;
B.RightChild = D;
C.Parent = B;
C.LeftChild = null;
C.RightChild = null;
D.Parent = B;
D.LeftChild = E;
D.RightChild = F;
E.Parent = D;
E.LeftChild = null;
E.RightChild = null;
F.Parent = D;
F.LeftChild = null;
F.RightChild = G;
G.Parent = F;
G.LeftChild = null;
G.RightChild = null;
Assert.IsTrue(A.GetGrandParent() == null);
Assert.IsTrue(B.GetGrandParent() == null);
Assert.IsTrue(C.GetGrandParent().Equals(A));
Assert.IsTrue(D.GetGrandParent().Equals(A));
Assert.IsTrue(E.GetGrandParent().Equals(B));
Assert.IsTrue(F.GetGrandParent().Equals(B));
Assert.IsTrue(G.GetGrandParent().Equals(D));
}
public void Initialize()
{
var A = new MockBinaryTreeNode <int, string>(40, "str3");
var B = new MockBinaryTreeNode <int, string>(20, "str1");
var C = new MockBinaryTreeNode <int, string>(70, "str6");
var D = new MockBinaryTreeNode <int, string>(50, "str4");
var E = new MockBinaryTreeNode <int, string>(80, "str7");
var F = new MockBinaryTreeNode <int, string>(30, "str2");
var G = new MockBinaryTreeNode <int, string>(60, "str5");
A.Parent = null;
A.LeftChild = B;
A.RightChild = C;
B.Parent = A;
B.LeftChild = null;
B.RightChild = F;
C.Parent = A;
C.LeftChild = D;
C.RightChild = E;
D.Parent = C;
D.LeftChild = null;
D.RightChild = G;
E.Parent = C;
E.LeftChild = null;
E.RightChild = null;
F.Parent = B;
F.LeftChild = null;
F.RightChild = null;
G.Parent = D;
G.LeftChild = null;
G.RightChild = null;
_tree = new MockBinarySearchTreeBase <int, string>();
_root = A;
}
public void IsRightChild_Success()
{
var A = new MockBinaryTreeNode <int, string>(5, "A");
var B = new MockBinaryTreeNode <int, string>(10, "B");
var C = new MockBinaryTreeNode <int, string>(20, "C");
A.Parent = null;
A.LeftChild = null;
A.RightChild = B;
B.Parent = A;
B.LeftChild = null;
B.RightChild = C;
C.Parent = B;
C.LeftChild = null;
C.RightChild = null;
Assert.IsTrue(B.IsRightChild());
Assert.IsTrue(C.IsRightChild());
}
public void Initialize()
{
var B = new MockBinaryTreeNode <int, string>(30, "B");
var A = new MockBinaryTreeNode <int, string>(47, "A");
var C = new MockBinaryTreeNode <int, string>(50, "C");
var D = new MockBinaryTreeNode <int, string>(20, "D");
var E = new MockBinaryTreeNode <int, string>(40, "E");
var F = new MockBinaryTreeNode <int, string>(35, "F");
var G = new MockBinaryTreeNode <int, string>(45, "G");
A.Parent = null;
A.LeftChild = B;
A.RightChild = C;
B.Parent = A;
B.LeftChild = D;
B.RightChild = E;
C.Parent = A;
C.LeftChild = null;
C.RightChild = null;
D.Parent = B;
D.LeftChild = null;
D.RightChild = null;
E.Parent = B;
E.LeftChild = F;
E.RightChild = G;
F.Parent = E;
F.LeftChild = null;
F.RightChild = null;
G.Parent = E;
G.LeftChild = null;
G.RightChild = null;
_root = A;
}
public void IsRightChild_Failure()
{
var A = new MockBinaryTreeNode <int, string>(10, "A");
var B = new MockBinaryTreeNode <int, string>(5, "B");
var C = new MockBinaryTreeNode <int, string>(2, "C");
A.Parent = null;
A.LeftChild = B;
A.RightChild = null;
B.Parent = A;
B.LeftChild = C;
B.RightChild = null;
C.Parent = B;
C.LeftChild = null;
C.RightChild = null;
Assert.IsFalse(A.IsRightChild());
Assert.IsFalse(B.IsRightChild());
Assert.IsFalse(C.IsRightChild());
}
public void InsertBST_WithoutBalancing()
{
var keyVals = new Dictionary <int, string>
{
[40] = "str3",
[20] = "str1",
[70] = "str6",
[50] = "str4",
[80] = "str7",
[30] = "str2",
[60] = "str5",
};
var tree = new MockBinarySearchTreeBase <int, string>();
MockBinaryTreeNode <int, string> root = null;
root = tree.Insert_BST(root, new MockBinaryTreeNode <int, string>(40, "str3"));
root = tree.Insert_BST(root, new MockBinaryTreeNode <int, string>(20, "str1"));
root = tree.Insert_BST(root, new MockBinaryTreeNode <int, string>(70, "str6"));
root = tree.Insert_BST(root, new MockBinaryTreeNode <int, string>(50, "str4"));
root = tree.Insert_BST(root, new MockBinaryTreeNode <int, string>(80, "str7"));
root = tree.Insert_BST(root, new MockBinaryTreeNode <int, string>(30, "str2"));
root = tree.Insert_BST(root, new MockBinaryTreeNode <int, string>(60, "str5"));
Assert.IsTrue(HasBinarySearchTreeOrderProperty <MockBinaryTreeNode <int, string>, int, string>(root));
var nodes = new List <MockBinaryTreeNode <int, string> >();
_tree.InOrderTraversal(root, nodes);
Assert.AreEqual(7, nodes.Count);
for (int i = 0; i < nodes.Count - 1; i++)
{
Assert.IsTrue(nodes[i].Key < nodes[i + 1].Key);
}
Assert.AreEqual(40, root.Key);
Assert.AreEqual("str3", root.Value, ignoreCase: false);
}
/// <summary>
/// Searches for the given key in the tree.
/// </summary>
/// <param name="root">Current root of the tree, or the node at which search operation should be started. </param>
/// <param name="key">The key to be searched. </param>
/// <returns>Returns the tree node that contains key. </returns>
public override MockBinaryTreeNode <TKey, TValue> Search(MockBinaryTreeNode <TKey, TValue> root, TKey key)
{
return(Search_BST(root, key));
}
/// <summary>
/// Inserts a new node in the tree
/// </summary>
/// <param name="root">Current root of the tree, or the node at which insert operation should be started.</param>
/// <param name="newNode">New node to be inserted in the tree. </param>
/// <returns>New root of the tree (might or might not change during operation).</returns>
public override MockBinaryTreeNode <TKey, TValue> Insert(MockBinaryTreeNode <TKey, TValue> root, MockBinaryTreeNode <TKey, TValue> newNode)
{
return(Insert_BST(root, newNode));
}
/// <summary>
/// Finds the minimum key in the (sub)tree rooted at <paramref name="root"/> node.
/// </summary>
/// <param name="root">The node at which (sub)tree is rooted. </param>
/// <returns>The node containing the minimum key. </returns>
public override MockBinaryTreeNode <TKey, TValue> FindMin(MockBinaryTreeNode <TKey, TValue> root)
{
return(FindMin_BST(root));
}
/// <summary>
/// Deletes a node with the given key from th tree.
/// </summary>
/// <param name="root">Current root of the tree, or the node at which delete operation should be started. </param>
/// <param name="key">The key of the node to be deleted. </param>
/// <returns>New root of the tree (might or might not change during the operation).</returns>
public override MockBinaryTreeNode <TKey, TValue> Delete(MockBinaryTreeNode <TKey, TValue> root, TKey key)
{
throw new NotImplementedException();
}
/// <summary>
/// Updates the tree node of the specified key with the new given value.
/// </summary>
/// <param name="root">Current root of the tree, or the node at which update operation should be started.</param>
/// <param name="key">The key of the node whose value should be updated.</param>
/// <param name="value">The new value. </param>
/// <returns>true in case of success and false otherwise.</returns>
public override bool Update(MockBinaryTreeNode <TKey, TValue> root, TKey key, TValue value)
{
return(Update_BST(root, key, value));
}
public void RotateLeft()
{
var A = new MockBinaryTreeNode <int, string>(50, "A");
var B = new MockBinaryTreeNode <int, string>(30, "B");
var C = new MockBinaryTreeNode <int, string>(20, "C");
var D = new MockBinaryTreeNode <int, string>(40, "D");
var E = new MockBinaryTreeNode <int, string>(35, "E");
var F = new MockBinaryTreeNode <int, string>(45, "F");
var G = new MockBinaryTreeNode <int, string>(47, "G");
A.Parent = null;
A.LeftChild = B;
A.RightChild = null;
B.Parent = A;
B.LeftChild = C;
B.RightChild = D;
C.Parent = B;
C.LeftChild = null;
C.RightChild = null;
D.Parent = B;
D.LeftChild = E;
D.RightChild = F;
E.Parent = D;
E.LeftChild = null;
E.RightChild = null;
F.Parent = D;
F.LeftChild = null;
F.RightChild = G;
G.Parent = F;
G.LeftChild = null;
G.RightChild = null;
Assert.IsTrue(HasBinarySearchTreeOrderProperty <MockBinaryTreeNode <int, string>, int, string>(A));
var tree = new MockBinarySearchTreeBase <int, string>();
tree.RotateLeft(B);
Assert.IsTrue(HasBinarySearchTreeOrderProperty <MockBinaryTreeNode <int, string>, int, string>(A));
Assert.IsTrue(A.Parent == null);
Assert.IsTrue(A.LeftChild.Equals(D));
Assert.IsTrue(A.RightChild == null);
Assert.IsTrue(B.Parent.Equals(D));
Assert.IsTrue(B.LeftChild.Equals(C));
Assert.IsTrue(B.RightChild.Equals(E));
Assert.IsTrue(C.Parent.Equals(B));
Assert.IsTrue(C.LeftChild == null);
Assert.IsTrue(C.RightChild == null);
Assert.IsTrue(D.Parent.Equals(A));
Assert.IsTrue(D.LeftChild.Equals(B));
Assert.IsTrue(D.RightChild.Equals(F));
Assert.IsTrue(E.Parent.Equals(B));
Assert.IsTrue(E.LeftChild == null);
Assert.IsTrue(E.RightChild == null);
Assert.IsTrue(F.Parent.Equals(D));
Assert.IsTrue(F.LeftChild == null);
Assert.IsTrue(F.RightChild.Equals(G));
Assert.IsTrue(G.Parent.Equals(F));
Assert.IsTrue(G.LeftChild == null);
Assert.IsTrue(G.RightChild == null);
}