LeetCode: Binary Search Tree Iterator 解题报告
Binary Search Tree Iterator Implement an iterator over a binary search tree (BST). Your iterator will be initialized ...
原文：【LeetCode】173. Binary Search Tree Iterator (2 solutions)
Binary Search Tree Iterator Implement an iterator over a binary search tree BST . Your iterator will be initialized with the root node of a BST. Callingnext will return the next smallest number in the ...
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