luke-else/Algorithms-DataStructures
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Delete method finally finished, parent

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and root nodes are finally fully traced!
This commit is contained in:
lukejelse04
2021-07-08 15:17:25 +01:00
parent 579b3dc0de
commit c9f16de23b
2 changed files with 24 additions and 27 deletions
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5
BinaryTree/BinaryTree/Program.cs
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@@ -10,7 +10,7 @@ namespace BinaryTree
Random random = new Random();
for (var i = 0; i < 10; i++)
for (var i = 0; i < 50; i++)
{
tree.Add(random.Next(0, 100));
}
@@ -23,9 +23,6 @@ namespace BinaryTree
Console.WriteLine("Delete node: ");
tree.Delete(Convert.ToInt32(Console.ReadLine()));
tree.Print(tree.Root);
Console.ReadLine();
}

46
BinaryTree/BinaryTree/tree.cs
View File

@@ -42,8 +42,7 @@ namespace BinaryTree
}else{
Current.SetRight(new node(_Data, Current));
}
}
private node Traverse(dynamic _Data, node _Current){
@@ -65,18 +64,14 @@ namespace BinaryTree
if (_Data != Current.Data)
{
Current = Traverse(_Data, Current);
}else{
break;
}
}
}
catch (System.Exception)
catch
{
//If it can't be found, return false
return false;
@@ -99,9 +94,7 @@ namespace BinaryTree
Current.Data = temp.Data;
//Find if the temp node is a left or a right now before deleting.
//Find if the temp node is a left or a right node before deleting.
if(temp.GetParent() == Current){
//If the current node is parent to our replacing node. (Only 1 level down)
Current.SetLeft(temp.GetLeft());
@@ -110,16 +103,11 @@ namespace BinaryTree
if (temp.GetLeft() != null)
{
temp.GetParent().SetRight(temp.GetLeft());
temp.GetLeft().SetParent(temp.GetParent());//---
}else{
temp.GetParent().SetRight(null);
}
}
//*Code not currently working - Doesn't confidently replace the root or parent nodes of each item that is deleted
// temp.SetParent(Current.GetParent());
// if (Current.GetParent() == null)
// {
// Root = Current;
// }
return true;
@@ -136,9 +124,10 @@ namespace BinaryTree
}else{
Root = Current.GetRight();
}
return true;
}
if (Current == Root || Current.Data < Current.GetParent().Data)
if (Current.Data < Current.GetParent().Data)
{
LeftFlag = true;
}
@@ -151,13 +140,15 @@ namespace BinaryTree
}else{
Current.GetParent().SetRight(Current.GetLeft());
}
Current.GetLeft().SetParent(Current.GetParent());
}else{//If it has a right child
if (LeftFlag == true)
{
Current.GetParent().SetLeft(Current.GetRight());
}else{
Current.GetParent().SetRight(Current.GetRight());
}
}
Current.GetRight().SetParent(Current.GetParent());
}
return true;
@@ -166,15 +157,24 @@ namespace BinaryTree
}else{
//If it has no children
if (Current.Data <= Current.GetParent().Data)
if (Current == Root)
{
Current.GetParent().SetLeft(null);
Root = null;
return true;
}else{
Current.GetParent().SetRight(null);
return true;
}
//Set the parent's relevent pointer to null
if (Current.Data <= Current.GetParent().Data)
{
Current.GetParent().SetLeft(null);
return true;
}else{
Current.GetParent().SetRight(null);
return true;
}
}
}
}