10 2015 档案

[LeetCode] Bulls and Cows
摘要：This problem seems to be easy at the first glance, especially the problem gives a too much simpler example. Make sure you understand the problem by ma... 阅读全文
posted @ 2015-10-31 18:23 jianchao-li 阅读(348) 评论(0) 推荐(0) 编辑
[LeetCode] Binary Tree Longest Consecutive Sequence
摘要：Problem Description:Given a binary tree, find the length of the longest consecutive sequence path.The path refers to any sequence of nodes from some s... 阅读全文
posted @ 2015-10-30 16:55 jianchao-li 阅读(2280) 评论(0) 推荐(0) 编辑
[LeetCode] Serialize and Deserialize Binary Tree
摘要：I adopt a way similar to that of the OJ to serialize the binary tree. For the following tree, my serialization result is "1,2,3,null,null,4,5," (note ... 阅读全文
posted @ 2015-10-30 15:51 jianchao-li 阅读(845) 评论(0) 推荐(0) 编辑
[LeetCode] Best Meeting Point
摘要：Problem Description:A group of two or more people wants to meet and minimize the total travel distance. You are given a 2D grid of values 0 or 1, wher... 阅读全文
posted @ 2015-10-22 16:34 jianchao-li 阅读(3869) 评论(0) 推荐(1) 编辑
[LeetCode] Find Median from Data Stream
摘要：This post shares a very nice solution using two heaps: a max heap for the smaller half and a min heap for the larger half. The code is rewritten below... 阅读全文
posted @ 2015-10-19 23:53 jianchao-li 阅读(1605) 评论(0) 推荐(0) 编辑
[LeetCode] Flip Game II
摘要：Problem Description:You are playing the following Flip Game with your friend: Given a string that contains only these two characters:+and-, you and yo... 阅读全文
posted @ 2015-10-17 00:20 jianchao-li 阅读(6522) 评论(0) 推荐(0) 编辑
[LeetCode] Flip Game
摘要：Problem Description:You are playing the following Flip Game with your friend: Given a string that contains only these two characters:+and-, you and yo... 阅读全文
posted @ 2015-10-15 13:54 jianchao-li 阅读(6192) 评论(0) 推荐(0) 编辑
[LeetCode] Nim Game
摘要：Haha, an interesting problem. Just try to let your opponent start with a number that is an integer multiple of 4.1 class Solution {2 public:3 bool... 阅读全文
posted @ 2015-10-13 16:41 jianchao-li 阅读(207) 评论(0) 推荐(0) 编辑
[LeetCode] Word Pattern II
摘要：Problem Description:Given apatternand a stringstr, find ifstrfollows the same pattern.Herefollowmeans a full match, such that there is a bijection bet... 阅读全文
posted @ 2015-10-12 00:08 jianchao-li 阅读(5000) 评论(0) 推荐(0) 编辑
[LeetCode] Word Pattern
摘要：This problem can be solved in very neat codes (yeah, you will see Stefan posting many nice solutions).The solution in the above link is so nice that I... 阅读全文
posted @ 2015-10-06 22:10 jianchao-li 阅读(421) 评论(0) 推荐(0) 编辑
[LeetCode] Game of Life
摘要：A solution using additional spaces to solve a copy of the original board is easy. To get an in-place solution, we need to record the information of st... 阅读全文
posted @ 2015-10-04 00:59 jianchao-li 阅读(699) 评论(0) 推荐(0) 编辑
[LeetCode] Unique Word Abbreviation
摘要：Problem Description:An abbreviation of a word follows the form . Below are some examples of word abbreviations:a) it --> it (n... 阅读全文
posted @ 2015-10-02 00:30 jianchao-li 阅读(4232) 评论(0) 推荐(0) 编辑