随笔分类 -  Leetcode

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[Leetcode] Combinations
摘要：Given two integersnandk, return all possible combinations ofknumbers out of 1 ...n.For example,Ifn= 4 andk= 2, a solution is:[ [2,4], [3,4], [2,3],... 阅读全文
posted @ 2014-11-13 03:45 Phoebe815 阅读(162) 评论(0) 推荐(0)
[Leetcode] Combination Sum II
摘要：Given a collection of candidate numbers (C) and a target number (T), find all unique combinations inCwhere the candidate numbers sums toT.Each number ... 阅读全文
posted @ 2014-11-13 02:39 Phoebe815 阅读(213) 评论(0) 推荐(0)
[Leetcode] Combination Sum
摘要：Given a set of candidate numbers (C) and a target number (T), find all unique combinations inCwhere the candidate numbers sums toT.Thesamerepeated num... 阅读全文
posted @ 2014-11-13 02:14 Phoebe815 阅读(165) 评论(0) 推荐(0)
[Leetcode] Merge Intervals
摘要：Given a collection of intervals, merge all overlapping intervals.For example,Given[1,3],[2,6],[8,10],[15,18],return[1,6],[8,10],[15,18].Solution: 1 /*... 阅读全文
posted @ 2014-11-13 01:36 Phoebe815 阅读(152) 评论(0) 推荐(0)
[Leetcode] Sort Colors
摘要：Given an array withnobjects colored red, white or blue, sort them so that objects of the same color are adjacent, with the colors in the order red, wh... 阅读全文
posted @ 2014-11-12 16:05 Phoebe815 阅读(161) 评论(0) 推荐(0)
[Leetcode] Gray Code
摘要：The gray code is a binary numeral system where two successive values differ in only one bit.Given a non-negative integernrepresenting the total number... 阅读全文
posted @ 2014-11-12 13:47 Phoebe815 阅读(134) 评论(0) 推荐(0)
[Leetcode] Max Points on a Line
摘要：Givennpoints on a 2D plane, find the maximum number of points that lie on the same straight line.Solution: 1 /** 2 * Definition for a point. 3 * cla... 阅读全文
posted @ 2014-11-12 09:43 Phoebe815 阅读(144) 评论(0) 推荐(0)
[Leetcode] Median of Two Sorted Arrays
摘要：There are two sorted arrays A and B of size m and n respectively. Find the median of the two sorted arrays. The overall run time complexity should be ... 阅读全文
posted @ 2014-11-10 15:42 Phoebe815 阅读(174) 评论(0) 推荐(0)
[Leetcode] Maximal Rectangle
摘要：Given a 2D binary matrix filled with 0's and 1's, find the largest rectangle containing all ones and return its area.Solution: 1 public class Solution... 阅读全文
posted @ 2014-11-10 05:54 Phoebe815 阅读(121) 评论(0) 推荐(0)
[Leetcode] Pascal's Triangle II
摘要：Given an indexk, return thekthrow of the Pascal's triangle.For example, givenk= 3,Return[1,3,3,1].Note:Could you optimize your algorithm to use onlyO(... 阅读全文
posted @ 2014-11-02 10:42 Phoebe815 阅读(154) 评论(0) 推荐(0)
[Leetcode] Pascal's Triangle
摘要：GivennumRows, generate the firstnumRowsof Pascal's triangle.For example, givennumRows= 5,Return[ [1], [1,1], [1,2,1], [1,3,3,1], [1,4,6,4,1]... 阅读全文
posted @ 2014-11-02 04:59 Phoebe815 阅读(113) 评论(0) 推荐(0)
[Leetcode] Merge Sorted Array
摘要：Given two sorted integer arrays A and B, merge B into A as one sorted array.Note:You may assume that A has enough space (size that is greater or equal... 阅读全文
posted @ 2014-11-02 04:19 Phoebe815 阅读(92) 评论(0) 推荐(0)
[Leetcode] Binary Tree Level Order Traversal II
摘要：Given a binary tree, return thebottom-up level ordertraversal of its nodes' values. (ie, from left to right, level by level from leaf to root).For exa... 阅读全文
posted @ 2014-11-02 03:51 Phoebe815 阅读(157) 评论(0) 推荐(0)
[Leetcode] Binary Tree Level Order Traversal
摘要：Given a binary tree, return thelevel ordertraversal of its nodes' values. (ie, from left to right, level by level).For example:Given binary tree{3,9,2... 阅读全文
posted @ 2014-11-02 02:59 Phoebe815 阅读(130) 评论(0) 推荐(0)
[Leetcode] Scramble String
摘要：Given a strings1, we may represent it as a binary tree by partitioning it to two non-empty substrings recursively.Below is one possible representation... 阅读全文
posted @ 2014-11-01 16:13 Phoebe815 阅读(132) 评论(0) 推荐(0)
[Leetcode] 3Sum Closest
摘要：Given an arraySofnintegers, find three integers inSsuch that the sum is closest to a given number, target. Return the sum of the three integers. You m... 阅读全文
posted @ 2014-11-01 08:21 Phoebe815 阅读(129) 评论(0) 推荐(0)
[Leetcode] 3Sum
摘要：Given an arraySofnintegers, are there elementsa,b,cinSsuch thata+b+c= 0? Find all unique triplets in the array which gives the sum of zero.Note:Elemen... 阅读全文
posted @ 2014-11-01 01:02 Phoebe815 阅读(144) 评论(0) 推荐(0)
[Leetcode] Two Sum
摘要：Given an array of integers, find two numbers such that they add up to a specific target number.The function twoSum should return indices of the two nu... 阅读全文
posted @ 2014-11-01 00:59 Phoebe815 阅读(211) 评论(0) 推荐(0)
[Leetcode] 4Sum
摘要：Given an arraySofnintegers, are there elementsa,b,c, anddinSsuch thata+b+c+d= target? Find all unique quadruplets in the array which gives the sum of ... 阅读全文
posted @ 2014-11-01 00:56 Phoebe815 阅读(202) 评论(0) 推荐(0)
[Leetcode] Word Break
摘要：Given a stringsand a dictionary of wordsdict, determine ifscan be segmented into a space-separated sequence of one or more dictionary words.For exampl... 阅读全文
posted @ 2014-10-31 15:04 Phoebe815 阅读(125) 评论(0) 推荐(0)

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