[LeetCode] Validate Binary Search Tree
Given a binary tree, determine if it is a valid binary search tree (BST). Assume a BST is defined as follows: The left subtree of a node ...
原文：Binary Tree和Binary Search Tree
Binary TreeDefinition： at most two children node. Binary Tree Example: root cur null null class TreeNode int value TreeNode left TreeNode right TreeNode parent point to this node s parent node. 面試常見題型 ...
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1. 概念： Binary-search tree（BST）是一顆二叉樹，每個樹上的節點都有<=1個父親節點，ROOT節點沒有父親節點。同時每個樹上的節點都有[0,2]個孩子節點(left child AND right child)。每個節點都包含有各自的KEY值以及相應 ...
LeetCode: Validate Binary Search Tree 解題報告
Validate Binary Search Tree Given a binary tree, determine if it is a valid binary search tree (BST).Assume a BST is defined as follows:The left ...