### Validate Binary Search Tree

Link to leetcode problem definition Given a binary tree, determine if it is a valid binary search tree (BST). Assume a BST is defined as…

Link to leetcode problem definition Given a binary tree, determine if it is a valid binary search tree (BST). Assume a BST is defined as…

Inspiration of this problem comes from Max Howel's interview experience with Google described in this tweet. Lets jump to the problem The…

Nice graph problem from leetcode biweekly contest. As majority of graph problems this one can be solved with Breadth First Search as well…