Sheryl Wang - 博客园

Coins in a Line II

摘要： here are n coins with different value in a line. Two players take turns to take one or two coins from left side until there are no more coins left. Th 阅读全文

posted @ 2016-06-24 10:21 Sheryl Wang 阅读(144) 评论(0) 推荐(0) 编辑

Stone Game

摘要： There is a stone game.At the beginning of the game the player picks n piles of stones in a line. The goal is to merge the stones in one pile observing 阅读全文

posted @ 2016-06-22 17:42 Sheryl Wang 阅读(742) 评论(0) 推荐(0) 编辑

Kth Smallest Sum In Two Sorted Arrays

摘要： Given two integer arrays sorted in ascending order and an integer k. Define sum = a + b, where a is an element from the first array and b is an elemen 阅读全文

posted @ 2016-06-21 20:07 Sheryl Wang 阅读(753) 评论(0) 推荐(0) 编辑

Kth Smallest Number in Sorted Matrix

摘要： Find the kth smallest number in at row and column sorted matrix. Given k = 4 and a matrix: [ [1 ,5 ,7], [3 ,7 ,8], [4 ,8 ,9], ] return 5 这一题是Kth Large 阅读全文

posted @ 2016-06-21 16:11 Sheryl Wang 阅读(252) 评论(0) 推荐(0) 编辑

Find Peak Element II

摘要： There is an integer matrix which has the following features: The numbers in adjacent positions are different. The matrix has n rows and m columns. For 阅读全文

posted @ 2016-06-21 10:13 Sheryl Wang 阅读(168) 评论(0) 推荐(0) 编辑

Coins in a Line

摘要： There are n coins in a line. Two players take turns to take one or two coins from right side until there are no more coins left. The player who take t 阅读全文

posted @ 2016-06-19 11:30 Sheryl Wang 阅读(165) 评论(0) 推荐(0) 编辑

Number of Airplanes in the Sky

摘要： Given an interval list which are flying and landing time of the flight. How many airplanes are on the sky at most? Notice If landing and flying happen 阅读全文

posted @ 2016-06-18 21:29 Sheryl Wang 阅读(261) 评论(0) 推荐(0) 编辑

Clone Graph

摘要： Clone an undirected graph. Each node in the graph contains a label and a list of its neighbors. OJ's undirected graph serialization: Nodes are labeled 阅读全文

posted @ 2016-06-18 20:21 Sheryl Wang 阅读(181) 评论(0) 推荐(0) 编辑

Implement Queue using Stacks

摘要： mplement the following operations of a queue using stacks. push(x) -- Push element x to the back of queue. pop() -- Removes the element from in front 阅读全文

posted @ 2016-06-18 11:23 Sheryl Wang 阅读(101) 评论(0) 推荐(0) 编辑

Top K Frequent Words

摘要： Given a list of words and an integer k, return the top k frequent words in the list. Given for k = 3, return ["code", "lint", "baby"]. for k = 4, retu 阅读全文

posted @ 2016-06-17 21:55 Sheryl Wang 阅读(469) 评论(0) 推荐(0) 编辑