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Update bst.py #348

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14 changes: 7 additions & 7 deletions Binary_Search_Tree/bst.py
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Original file line number Diff line number Diff line change
Expand Up @@ -10,18 +10,18 @@ def addHelper(self,root,data):
# case for reaching current leafs, base cases
if root.val < data and root.right == None:
root.right = BST(data,None,None)
return "insertion completed"
return "Insertion completed"
elif root.val > data and root.left == None:
root.left = BST(data,None,None)
return "insertion completed"
return "Insertion completed"

# else we continue tracing downwards
if root.val < data:
return self.add(root.right,data)
elif root.val > data:
return self.add(root.left,data)
else:
return "insertion failed: duplicate value"
return "Insertion failed: duplicate value"

def add(self,root,data):
if root == None:
Expand All @@ -32,7 +32,7 @@ def restructdata(self,root):
# base case: we reach a leaf
if root == None or (root.left == None and root.right == None):
root = None
return "restructure finished"
return "Restructure finished"

# need dummy nodes to compare target value to children value
v1 = float('-inf')
Expand All @@ -55,7 +55,7 @@ def restructdata(self,root):

def removeHelper(self,root,data):
if root == None:
return "deletion failed: could not find value"
return "Deletion failed: could not find value"

# adhering to typical bst properties
if root.val < data:
Expand All @@ -82,9 +82,9 @@ def removeHelper(self,root,data):

def remove(self,root,data):
if root == None:
return "deletion failed: deleting from an empty tree"
return "Deletion failed: deleting from an empty tree"
return self.removeHelper(root,data)