发表于   |   分类于   |  
Balanced Binary TreeGiven a binary tree, determine if it is height-balanced. For this problem, a height-balanced binary tree is defined as a binary tree in which the depth of the two subtrees of ever ...
阅读全文 »

发表于   |   分类于   |  
今天的华师 Binary Tree Level Order Traversal IIGiven a binary tree, return the bottom-up level order traversal of its nodes’ values. (ie, from left to right, le ...
阅读全文 »

发表于   |   分类于   |  
House RobberYou are a professional robber planning to rob houses along a street. Each house has a certain amount of money stashed, the only constraint stopping you from robbing each of them is that ad ...
阅读全文 »

发表于   |   分类于   |  
Merge Two Sorted ListsMerge two sorted linked lists and return it as a new list. The new list should be made by splicing together the nodes of the first two lists. 123456789101112131415161718192021222 ...
阅读全文 »

发表于   |   分类于   |  
Lowest Common Ancestor of a Binary Search TreeGiven a binary search tree (BST), find the lowest common ancestor (LCA) of two given nodes in the BST. According to the definition of LCA on Wikipedia: &# ...
阅读全文 »

发表于   |   分类于   |  
Majority ElementGiven an array of size n, find the majority element. The majority element is the element that appears more than ⌊ n/2 ⌋ times. You may assume that the array is non-empty ...
阅读全文 »

发表于   |   分类于   |  
Nim GameYou are playing the following Nim Game with your friend: There is a heap of stones on the table, each time one of you take turns to remove 1 to 3 stones. The one who removes the last stone wil ...
阅读全文 »