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Leetcode 1038. Binary Search Tree to Greater Sum Tree Python Solution

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Given the root of a Binary Search Tree (BST), convert it to a Greater Tree such that every key of the original BST is changed to the original key plus the sum of all keys greater than the original key in BST.
As a reminder, a binary search tree is a tree that satisfies these constraints:
The left subtree of a node contains only nodes with keys less than the node's key.
The right subtree of a node contains only nodes with keys greater than the node's key.
Both the left and right subtrees must also be binary search trees.
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As a reminder, a binary search tree is a tree that satisfies these constraints:
The left subtree of a node contains only nodes with keys less than the node's key.
The right subtree of a node contains only nodes with keys greater than the node's key.
Both the left and right subtrees must also be binary search trees.
#BinarySearchTree #GreaterSumTree #PythonCoding #AlgorithmExplanation #CodingTutorial #DataStructures #LeetCode #Programming #TechEducation #ComputerScience #CodeWithMe #TechTutorials #leetcode #hackerrank #codesignal #greeksforgreeks #codechef #topcoder #projecteuler #interviewbit #spoj #atcoder #python #mahcinelearning #artificialintelligence #deeplearning #ai #generativeai #chatgpt #DSA