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LeetCode:Merge Intervals
题目链接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].对若干...
分类:其他好文   时间:2014-05-08 05:21:42    阅读次数:334
LeetCode Word Break II
class Solution {private: vector result;public: vector wordBreak(string s, unordered_set &dict) { vector > dp; result.clear(); ...
分类:其他好文   时间:2014-05-08 01:00:03    阅读次数:361
Leetcode:Max Points on a Line
Given n points on a 2D plane, find the maximum number of points that lie on the same straight line. 解题想法: 其实判断一个直线上最好的方法是判断斜率。如果在同一直线上,那么直线上一点与其他点的斜率相...
分类:其他好文   时间:2014-05-07 21:13:02    阅读次数:323
LeetCode:Maximum Subarray
题目链接 Find the contiguous subarray within an array (containing at least one number) which has the largest sum. For example, given the array [?2,1,?3,4,...
分类:其他好文   时间:2014-05-07 16:42:42    阅读次数:287
codechef Chef and The Right Triangles 题解
Chef and The Right Triangles The Chef is given a list of N triangles. Each triangle is identfied by the coordinates of its three corners in the 2-D cartesian plane. His job is to figure out how m...
分类:其他好文   时间:2014-05-07 16:28:35    阅读次数:314
leetcode第一刷_Best Time to Buy and Sell Stock II
这道题虽然是上一道题的增强,但是反而简单了。可以交易无数次,但是买卖必须成对的出现。 为了简单起见,我用abc三股股票来说明,且忽略掉相等的情况。三个数一共有六种大小关系。注意他们之间的先后顺序是不能乱的。 1. a 2. b 3. a 4. b 5. c 6. c 好的,你已经看出来了,只要当相邻的两个数是后面一个较大时,就之间累计上他们的差,否则,pass。直观一点的表述,只要...
分类:其他好文   时间:2014-05-07 12:33:11    阅读次数:512
leetcode第一刷_Best Time to Buy and Sell Stock III
这道题还是挺难的,属于我前面提到的,给个数组,线性时间找出个什么东西,虽然上面的两个买卖股票也是这类,不过相比之下稚嫩多了。有关至少至多的问题比较烦人,不好想,等再做一些题,可能会发现什么规律。这道题的情况还是比较少的,要么买卖了两次,要么一次。 买卖一次的情况,已经解决过了,现在分析买卖两次的情况。两次买卖之间是没有交叉的,即下一次买之前一定已经卖掉了。最容易想到,穷去分点,每个部分都按照买卖...
分类:其他好文   时间:2014-05-07 11:27:50    阅读次数:331
Leetcode | Subsets I & II
Subsets IGiven a set of distinct integers, S, return all possible subsets.Note:Elements in a subset must be in non-descending order.The solution set m...
分类:其他好文   时间:2014-05-07 11:13:33    阅读次数:299
Leetcode | Populating Next Right Pointers in Each Node I & II
Populating Next Right Pointers in Each Node IGiven a binary tree struct TreeLinkNode { TreeLinkNode *left; TreeLinkNode *right; TreeLin...
分类:其他好文   时间:2014-05-07 01:34:51    阅读次数:407
ProjectEuler_P12
Problem:The sequence of triangle numbers is generated by adding the natural numbers. So the 7thtriangle number would be 1 + 2 + 3 + 4 + 5 + 6 + 7 = 28...
分类:其他好文   时间:2014-05-07 00:28:01    阅读次数:365
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