173. Binary Search Tree Iterator

LeetCodeStackTreeDesignBinary Search TreeBinary TreeIteratorOpen on judge ↗

Implement the BSTIterator class that represents an iterator over the in-order traversal of a binary search tree (BST): - BSTIterator(TreeNode root) Initializes an object of the BSTIterator class. The root of the BST is given as part of the constructor. The pointer should be initialized to a non-existent number smaller than any element in the BST. - boolean hasNext() Returns true if there exists

HINT LADDERno hints yet

L1 Observation

L2 Technique

L3 Approach

L4 Pseudo-code

🔒

L5 Full solution

L5 unlocks only if you insist twice

solution.cppC++17

CodeSearch Tutor

Hints, not spoilers — it won’t hand over the full solution unless you insist.

voice by Sarvam AI