郝春雨-CSDN博客

原创【LeetCode】250.Count Univalue Subtrees(Medium)解题报告

【LeetCode】250.Count Univalue Subtrees(Medium)解题报告题目地址：https://leetcode.com/problems/count-univalue-subtrees/题目描述： Given a binary tree, count the number of uni-value subtrees. A Uni-value sub

2018-05-04 11:27:41 432

原创【LeetCode】124.Binary Tree Maximum Path Sum(Hard)解题报告

【LeetCode】124.Binary Tree Maximum Path Sum(Hard)解题报告题目地址：https://leetcode.com/problems/binary-tree-maximum-path-sum/description/ 题目描述： Given a non-empty binary tree, find the maximum path sum.

2018-05-04 10:56:48 313

原创【LeetCode】106.Construct Binary Tree from Inorder and Postorder Traversal(Medium)解题报告

【LeetCode】106.Construct Binary Tree from Inorder and Postorder Traversal(Medium)解题报告题目地址：https://leetcode.com/problems/construct-binary-tree-from-inorder-and-postorder-traversal/description/ 题目描述：

2018-05-01 23:00:33 362

原创【LeetCode】105.Construct Binary Tree from Preorder and Inorder Traversal(Medium)解题报告

【LeetCode】105.Construct Binary Tree from Preorder and Inorder Traversal(Medium)解题报告题目地址：https://leetcode.com/problems/construct-binary-tree-from-preorder-and-inorder-traversal/description/ 题目描述： G

2018-05-01 22:58:01 239

原创【LeetCode】129.Sum Root to Leaf Numbers（Medium）解题报告

【LeetCode】129.Sum Root to Leaf Numbers（Medium）解题报告题目地址：https://leetcode.com/problems/sum-root-to-leaf-numbers/description/ 题目描述： Given a binary tree containing digits from 0-9 only, each root-to-l

2018-04-08 23:03:25 158

原创【LeetCode】563.Binary Tree Tilt（Easy）解题报告

【LeetCode】563.Binary Tree Tilt（Easy）解题报告题目地址：https://leetcode.com/problems/binary-tree-tilt/description/ 题目描述： Given a binary tree, flatten it to a linked list in-place.Given a binary tree, return

2018-04-08 22:49:35 205

原创【LeetCode】114.Flatten Binary Tree to Linked List（Medium）解题报告

【LeetCode】114.Flatten Binary Tree to Linked List（Medium）解题报告题目地址：https://leetcode.com/problems/flatten-binary-tree-to-linked-list/description/ 题目描述： Given a binary tree, flatten it to a linked lis

2018-04-07 10:01:55 142

原创【LeetCode】270.Closest Binary Search Tree Value(Easy)解题报告

【LeetCode】270.Closest Binary Search Tree Value(Easy)解题报告题目地址：http://leetcode.com/problems/closest-binary-search-tree-value/ 题目描述： Given a non-empty binary search tree and a target value, find the

2018-04-03 21:45:48 627

原创【LeetCode】117.Populating Next Right Pointers in Each Node II(Medium)解题报告

【LeetCode】117.Populating Next Right Pointers in Each Node II(Medium)解题报告题目地址：https://leetcode.com/problems/unique-binary-search-trees/description/ 题目描述： Follow up for problem “Populating Next Righ

2018-04-03 21:09:59 257

原创【LeetCode】116.Populating Next Right Pointers in Each Node(Medium)解题报告

【LeetCode】116.Populating Next Right Pointers in Each Node(Medium)解题报告题目地址：https://leetcode.com/problems/populating-next-right-pointers-in-each-node/description/ 题目描述：Given a binary tree st...

2018-03-30 08:54:19 117

原创【LeetCode】109.Convert Sorted List to Binary Search Tree(Medium)解题报告

【LeetCode】109.Convert Sorted List to Binary Search Tree(Medium)解题报告题目地址：https://leetcode.com/problems/convert-sorted-list-to-binary-search-tree/description/ 题目描述： Given a singly linked list where

2018-03-29 14:05:26 237

原创【LeetCode】337.House Robber III(Medium)解题报告

【LeetCode】337.House Robber III(Medium)解题报告题目地址：https://leetcode.com/problems/house-robber-iii/description/ 题目描述： The thief has found himself a new place for his thievery again. There is only one e

2018-03-29 14:00:51 205

原创【LeetCode】108.Convert Sorted Array to Binary Search Tree(Easy)解题报告

【LeetCode】108.Convert Sorted Array to Binary Search Tree(Easy)解题报告题目地址：https://leetcode.com/problems/convert-sorted-array-to-binary-search-tree/description/ 题目描述： Given an array where elements are

2018-03-29 13:56:42 114

原创【LeetCode】173.Binary Search Tree Iterator(Medium)解题报告

【LeetCode】173.Binary Search Tree Iterator(Medium)解题报告题目地址：https://leetcode.com/problems/binary-search-tree-iterator/description/ 题目描述： Implement an iterator over a binary search tree (BST). Your i

2018-03-29 13:54:55 127

原创【LeetCode】95.Unique Binary Search Trees II(Medium)解题报告

【LeetCode】95.Unique Binary Search Trees II(Medium)解题报告题目地址：https://leetcode.com/problems/unique-binary-search-trees-ii/description/ 题目描述： Given an integer n, generate all structurally unique BST’s

2018-03-29 13:52:35 234

原创【LeetCode】96.Unique Binary Search Trees(Medium)解题报告

【LeetCode】96.Unique Binary Search Trees(Medium)解题报告题目地址：https://leetcode.com/problems/unique-binary-search-trees/description/ 题目描述： Given n, how many structurally unique BST’s (binary search trees

2018-03-29 13:48:11 133

原创【LeetCode】449.Serialize and Deserialize BST(Medium)解题报告

【LeetCode】449.Serialize and Deserialize BST(Medium)解题报告题目地址：https://leetcode.com/problems/serialize-and-deserialize-bst/description/ 题目描述： Serialization is the process of converting a data structu

2018-03-29 13:44:44 264

原创【LeetCode】297.Serialize and Deserialize Binary Tree(Hard)解题报告

【LeetCode】297.Serialize and Deserialize Binary Tree(Hard)解题报告题目地址：https://leetcode.com/problems/serialize-and-deserialize-binary-tree/description/ 题目描述： Serialization is the process of converting

2018-03-22 23:01:46 167

原创【LeetCode】653.Two Sum IV - Input is a BST(Easy)解题报告

【LeetCode】653.Two Sum IV - Input is a BST(Easy)解题报告题目地址：https://leetcode.com/problems/two-sum-iv-input-is-a-bst/description/ 题目描述： Given a Binary Search Tree and a target number, return true if th

2018-03-22 22:12:27 146

原创【LeetCode】285.Inorder Successor in BST(Medium)(带锁题)解题报告

【LeetCode】285.Inorder Successor in BST(Medium)(带锁题)解题报告题目地址：https://leetcode.com/problems/inorder-successor-in-bst/ 题目描述： Given a binary search tree and a node in it, find the in-order successor o

2018-03-19 13:13:14 279

原创【LeetCode】404.Sum of Left Leaves(Easy)解题报告

【LeetCode】404.Sum of Left Leaves(Easy)解题报告题目地址：https://leetcode.com/problems/sum-of-left-leaves/description/ 题目描述： Find the sum of all left leaves in a given binary tree.Example: 3 / \ 9

2018-03-19 09:04:15 218

原创【LeetCode】513.Find Bottom Left Tree Value(Medium)解题报告

【LeetCode】513.Find Bottom Left Tree Value(Medium)解题报告题目地址：https://leetcode.com/problems/find-bottom-left-tree-value/description/ 题目描述： Given a binary tree, find the leftmost value in the last row

2018-03-19 08:41:38 129

原创【LeetCode】298.Binary Tree Longest Consecutive Sequence(Medium)(加锁题)解题报告

【LeetCode】298.Binary Tree Longest Consecutive Sequence(Medium)(加锁题)解题报告题目地址：https://leetcode.com/problems/binary-tree-longest-consecutive-sequence/ 题目描述： Given a binary tree, find the length of th

2018-03-18 09:22:46 228

原创【LeetCode】156.Binary Tree Upside Down(Medium)(加锁题)解题报告

【LeetCode】156.Binary Tree Upside Down(Medium)(加锁题)解题报告题目地址：https://leetcode.com/problems/binary-tree-upside-down/ 题目描述： Given a binary tree where all the right nodes are either leaf nodes with a s

2018-03-17 22:46:48 239

原创【LeetCode】637.Average of Levels in Binary Tree(Easy)解题报告

【LeetCode】637.Average of Levels in Binary Tree(Easy)解题报告题目地址：https://leetcode.com/problems/average-of-levels-in-binary-tree/description/ 题目描述： Given a non-empty binary tree, return the average val

2018-03-17 20:29:32 167

原创【LeetCode】617.Merge Two Binary Trees(Easy)解题报告

【LeetCode】617.Merge Two Binary Trees(Easy)解题报告题目地址：https://leetcode.com/problems/merge-two-binary-trees/description/ 题目描述： Given two binary trees and imagine that when you put one of them to cover

2018-03-17 20:18:43 253

原创【LeetCode】110. Balanced Binary Tree(Easy)解题报告

【LeetCode】110. Balanced Binary Tree(Easy)解题报告题目地址：https://leetcode.com/problems/balanced-binary-tree/description/ 题目描述： Given a binary tree, determine if it is height-balanced. For this pro

2018-03-17 20:07:24 169

原创【LeetCode】199.Binary Tree Right Side View(Medium)解题报告

【LeetCode】199.Binary Tree Right Side View(Medium)解题报告题目地址：https://leetcode.com/problems/binary-tree-right-side-view/description/ 题目描述： Given a binary tree, imagine yourself standing on the right s

2018-03-17 19:51:40 123

原创【LeetCode】199.Binary Tree Right Side View(Medium)解题报告

【LeetCode】199.Binary Tree Right Side View(Medium)解题报告题目地址：https://leetcode.com/problems/binary-tree-right-side-view/description/ 题目描述： Given a binary tree, imagine yourself standing on the right s

2018-03-17 19:51:14 119

原创【LeetCode】226.Invert Binary Tree(Easy)解题报告

【LeetCode】226.Invert Binary Tree(Easy)解题报告题目地址：https://leetcode.com/problems/invert-binary-tree/description/ 题目描述：Invert a binary tree. 4 / \ 2 7 / \ / \1 3 6 9to 4 /

2018-03-17 10:03:27 130

原创 LeetCode】101.Symmetric Tree(Easy)解题报告

【LeetCode】101.Symmetric Tree(Easy)解题报告题目地址：https://leetcode.com/problems/symmetric-tree/description/ 题目描述： Given a binary tree, check whether it is a mirror of itself (ie, symmetric around its cen

2018-03-17 10:00:11 118

原创【LeetCode】94.Binary Tree Inorder Traversal(Medium)解题报告

【LeetCode】94.Binary Tree Inorder Traversal(Medium)解题报告题目地址：https://leetcode.com/problems/binary-tree-level-order-traversal-ii/description/ 题目描述： Given a binary tree, return the inorder traversal o

2018-03-17 09:54:50 150

原创【LeetCode】107.Binary Tree Level Order Traversal II(Easy)解题报告

【LeetCode】107.Binary Tree Level Order Traversal II(Easy)解题报告题目地址：https://leetcode.com/problems/binary-tree-level-order-traversal-ii/description/ 题目描述： Given a binary tree, return the bottom-up lev

2018-03-17 09:51:30 101

原创【LeetCode】103. Binary Tree Zigzag Level Order Traversal(Medium)解题报告

【LeetCode】103. Binary Tree Zigzag Level Order Traversal(Medium)解题报告题目地址：https://leetcode.com/problems/binary-tree-level-order-traversal/description/ 题目描述： Given a binary tree, return the zigzag le

2018-03-14 18:28:50 119

原创【LeetCode】102.Binary Tree Level Order Traversal(Medium)解题报告

【LeetCode】102.Binary Tree Level Order Traversal(Medium)解题报告题目地址：https://leetcode.com/problems/binary-tree-level-order-traversal/description/ 题目描述： Given a binary tree, return the level order trave

2018-03-14 18:00:50 89

原创【LeetCode】113.Path Sum II(Medium)解题报告

【LeetCode】113.Path Sum II(Medium)解题报告题目地址：https://leetcode.com/problems/path-sum-ii/description/ 题目描述： Given a binary tree and a sum, find all root-to-leaf paths where each path’s sum equals the g

2018-03-14 16:26:08 113

原创【LeetCode】112.Path Sum(Easy)解题报告

【LeetCode】112.Path Sum(Easy)解题报告题目地址：https://leetcode.com/problems/path-sum/description/ 题目描述： Given a binary tree and a sum, determine if the tree has a root-to-leaf path such that adding up...

2018-03-12 22:44:15 101

原创【LeetCode】144. Binary Tree Preorder Traversal(Medium)解题报告

【LeetCode】144. Binary Tree Preorder Traversal(Medium)解题报告题目地址：https://leetcode.com/problems/binary-tree-preorder-traversal/description/ 题目描述： Given a binary tree, return the preorder traversal of

2018-03-11 10:32:13 96

原创【LeetCode】257.Binary Tree Paths(Easy)解题报告

【LeetCode】257.Binary Tree Paths(Easy)解题报告题目地址：https://leetcode.com/problems/binary-tree-paths/description/ 题目描述： Given a binary tree, return all root-to-leaf paths. For example, given the f

2018-03-11 10:27:33 170

原创【LeetCode】98. Validate Binary Search Tree(Medium)解题报告

【LeetCode】98. Validate Binary Search Tree(Medium)解题报告题目地址：https://leetcode.com/problems/validate-binary-search-tree/description/ 题目描述： Given a binary tree, determine if it is a valid binary search

2018-03-11 10:24:23 132

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