文章 2017-12-14 来自:开发者社区

[LeetCode] Verify Preorder Sequence in Binary Search Tree 验证二叉搜索树的先序序列

Given an array of numbers, verify whether it is the correct preorder traversal sequence of a binary search tree. You may assume each number in the sequence is unique. Follow up: Could you do it using....

文章 2015-11-09 来自:开发者社区

leetcode Binary Search

leetcode 35 Search Insert Position Question Given a sorted array and a target value, return the index if the target is found. If not, return the index where it would be if it were inserted in ord...

文章 2015-07-11 来自:开发者社区

[LeetCode] Lowest Common Ancestor of a Binary Search Tree

Well, remember to take advantage of the property of binary search trees, which is, node -> left -> val < node -> val < node -> right -> val. Moreover, both p and&nb...

文章 2015-03-24 来自:开发者社区

【LeetCode从零单排】No96 Unique Binary Search Trees

题目 Given n, how many structurally unique BST's (binary search trees) that store values 1...n? For example,Given n = 3, there are a total of 5 unique BST's. 1 3 3 2 1 \ ...

文章 2014-12-27 来自:开发者社区

[LeetCode]98.Validate Binary Search Tree

【题目】 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 contains only nodes with keys less than the node...

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