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LeetCode: 110. Balanced Binary Tree

LeetCode: 110. Balanced Binary Tree 题目描述 Given a binary tree, determine if it is height-balanced. For this problem, a height-balanced binary tree i...

2018-03-27

0 445

LeetCode: 109. Convert Sorted List to Binary Search Tree

LeetCode: 109. Convert Sorted List to Binary Search Tree 题目描述 Given a singly linked list where elements are sorted in ascending order, convert it to...

leetcode linkedlist tree binary tree BST

2018-03-26

0 407

LeetCode: 108. Convert Sorted Array to Binary Search Tree

LeetCode: 108. Convert Sorted Array to Binary Search Tree 题目描述 Given an array where elements are sorted in ascending order, convert it to a height b...

2018-03-26

0 403

LeetCode: 107. Binary Tree Level Order Traversal II

LeetCode: 107. Binary Tree Level Order Traversal II 题目描述 Given a binary tree, return the bottom-up level order traversal of its nodes’ values. (ie, ...

2018-03-25

0 469

LeetCode: 106. Construct Binary Tree from Inorder and Postorder Traver

LeetCode: 106. Construct Binary Tree from Inorder and Postorder Traver 题目描述 Given inorder and postorder traversal of a tree, construct the binary tr...

leetcode

2018-03-24

0 499

LeetCode: 105. Construct Binary Tree from Preorder and Inorder Traversal

LeetCode: 105. Construct Binary Tree from Preorder and Inorder Traversal 题目描述 Given preorder and inorder traversal of a tree, construct the binary t...

leetcode

2018-03-23

0 578

LeetCode: 103. Binary Tree Zigzag Level Order Traversal

LeetCode: 103. Binary Tree Zigzag Level Order Traversal 题目描述 Given a binary tree, return the zigzag level order traversal of its nodes’ values. (ie,...

leetcode

2018-03-23

0 431

LeetCode: 102. Binary Tree Level Order Traversal

LeetCode: 102. Binary Tree Level Order Traversal 题目描述 Given a binary tree, return the level order traversal of its nodes’ values. (ie, from left to ...

leetcode

2018-03-22

0 453

LeetCode: 101. Symmetric Tree

LeetCode: 101. Symmetric Tree 题目描述 Given a binary tree, check whether it is a mirror of itself (ie, symmetric around its center). For example, this...

LeetCode

2018-03-21

0 374

LeetCode: 99. Recover Binary Search Tree

LeetCode: 99. Recover Binary Search Tree 题目描述 Two elements of a binary search tree (BST) are swapped by mistake. Recover the tree without changing ...

LeetCode

2018-03-20

0 635