How to Solve Delete Node in a B S T Problem
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Delete Node in a BST
Given a root node reference of a BST and a key, delete the node with the given key in the BST. Return the root node reference (possibly updated) of the BST. Basically, the deletion can be divided into...
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Understanding the Delete Node in a B S T Problem
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Problem Statement
Given a root node reference of a BST and a key, delete the node with the given key in the BST. Return the root node reference (possibly updated) of the BST. Basically, the deletion can be divided into two stages: Search for a node to remove. If the node is found, delete the node.
Delete Node in a BST
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Examples
root = [5,3,6,2,4,null,7], key = 3[5,4,6,2,null,null,7]Given key to delete is 3. So we find the node with value 3 and delete it. One valid answer is [5,4,6,2,null,null,7], shown in the above BST. Please notice that another valid answer is [5,2,6,null,4,null,7] and it's also accepted.
root = [5,3,6,2,4,null,7], key = 0[5,3,6,2,4,null,7]The tree does not contain a node with value = 0.
root = [], key = 0[]Constraints
The number of nodes in the tree is in the range [0, 104].105 <= Node.val <= 105Each node has a unique value.root is a valid binary search tree.105 <= key <= 105Follow up: Could you solve it with time complexity O(height of tree)?How Interview Coder Helps with Leetcode Problems
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