public void Fun()
{
var tree = new RedBlackTree <int>();
tree.AddNode(10);
tree.AddNode(5);
tree.AddNode(15);
tree.AddNode(77);
Assert.IsTrue(tree.Validate());
Assert.IsTrue(VerifyTree(tree,
" 10B",
" 5B 15B",
" - - - 77R",
" - - - - - - - - "));
tree.AddPair(20, 25);
Assert.IsTrue(tree.Validate());
Assert.IsTrue(VerifyTree(tree,
" 10B",
" 5B 20R",
" - - 15B 77B",
" - - - - - - 25R - "));
tree.AddPair(27, 29);
Assert.IsTrue(tree.Validate());
Assert.IsTrue(VerifyTree(tree,
" 20B",
" 10R 27R",
" 5B 15B 25B 77B",
" - - - - - - 29R - "));
}
private static RedBlackTree <int> CreateBalancedFourLevel()
{
var tree = new RedBlackTree <int>();
var items = new[]
{
20,
10, 30,
4, 15, 24, 35,
2, 7, 13, 18, 22, 27, 33, 38,
};
foreach (var item in items)
{
tree.AddNode(item);
}
Assert.IsTrue(VerifyTree(tree,
"20B",
"10R 30R",
"4B 15B 24B 35B",
"2R 7R 13R 18R 22R 27R 33R 38R"));
Assert.AreEqual("2 4 7 10 13 15 18 20 22 24 27 30 33 35 38", string.Join(" ", tree.Items));
return(tree);
}
private static RedBlackTree <int> CreateBalancedFiveLevel()
{
var tree = new RedBlackTree <int>();
var items = new[]
{
20,
10, 30,
4, 15, 24, 35,
2, 7, 13, 18, 22, 27, 33, 38,
1, 3, 6, 8, 11, 14, 16, 19, 21, 23, 26, 28, 31, 34, 36, 39
};
foreach (var item in items)
{
tree.AddNode(item);
}
Assert.IsTrue(VerifyTree(tree,
"20B",
"10B 30B",
"4R 15R 24R 35R",
"2B 7B 13B 18B 22B 27B 33B 38B",
"1R 3R 6R 8R 11R 14R 16R 19R 21R 23R 26R 28R 31R 34R 36R 39R"));
Assert.AreEqual("1 2 3 4 6 7 8 10 11 13 14 15 16 18 19 20 21 22 23 24 26 27 28 30 31 33 34 35 36 38 39", string.Join(" ", tree.Items));
return(tree);
}
public void ResolveDoubleBlackUpToRoot()
{
var tree = new RedBlackTree <int>();
tree.AddNode(20);
tree.AddNode(10);
tree.AddNode(30);
tree.MarkBlack(0, 1);
Assert.IsTrue(VerifyTree(tree,
" 20B",
" 10B 30B"));
tree.Remove(30);
Assert.IsTrue(VerifyTree(tree,
" 20B",
" 10R - "));
}
public void MultiInsertOnRight()
{
var tree = new RedBlackTree <int>();
var items = new[] { 18, 7, 15, 16, 30, 25, 40, 60, 2, 1, 70 };
foreach (var item in items)
{
tree.AddNode(item);
}
Assert.AreEqual("1 2 7 15 16 18 25 30 40 60 70", string.Join(" ", tree.Items));
}