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Leetcode-cn.com 2022-03-21
🟢 653.two-sum-iv-input-is-a-bst

🏷️ Tags
#tree #depth_first_search #breadth_first_search #binary_search_tree #hash_table #two_pointers #binary_tree

Description
给定一个二叉搜索树 root 和一个目标结果 k,如果 BST 中存在两个元素且它们的和等于给定的目标结果,则返回 true

Example
输入: root = [5,3,6,2,4,null,7], k = 9
输出: true