Validating Binary Search Trees with Recursive Boundary Checks
Valid Binary Search Tree (BST) properties:
A node's left subtree contains only nodes with values less than the node's value.
A node's right subtreee contains only nodes with values greater than the node's value.
Both left and right subtrees must also be valid BSTs.
Example 1:
Input: root = [2,1,3]
Output: true
Example 2:
Input: root = [5,1,4 ...
Posted on Sun, 07 Jun 2026 17:20:19 +0000 by dino345