110. Balanced Binary Tree-平衡二叉树
Given a binary tree, determine if it is height-balanced... » 阅读全文
108. Convert Sorted Array to Binary Search Tree-将有序数组转换为二叉搜索树
Given an array where elements are sorted in ascending o... » 阅读全文
107. Binary Tree Level Order Traversal II-二叉树的层序遍历 II
Given a binary tree, return the bottom-up level order t... » 阅读全文
104. Maximum Depth of Binary Tree-二叉树的最大深度
Given the root of a binary tree, return its maximum dep... » 阅读全文
101. Symmetric Tree- 对称二叉树
给定一个二叉树，检查它是否是镜像对称的。 例如，二叉树 [1,2,2,3,4,4,3] 是对称的。 但是下面这... » 阅读全文
100. Same Tree-相同的树
给定两个二叉树，编写一个函数来检验它们是否相同。 如果两个树在结构上相同，并且节点具有相同的值，则认为它们是相... » 阅读全文
88. Merge Sorted Array
Given two sorted integer arrays nums1 and nums2, merge ... » 阅读全文
83. Remove Duplicates from Sorted List
Given the head of a sorted linked list, delete all dupl... » 阅读全文
69. Sqrt(x)
Given a non-negative integer x, compute and return the ... » 阅读全文
67. Add Binary
Given two binary strings a and b, return their sum as a... » 阅读全文