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[LeetCode]Max Points on a Line
题目:Givennpoints on a 2D plane, find the maximum number of points that lie on the same straight line.算法分析:定义最大直线为符合相同条件的直线中通过点最多的那条直线。对每个点p,计算其它的点与p形成的...
分类:其他好文   时间:2014-05-16 23:26:31    阅读次数:389
Leetcode: Count and Say
一次过 1 public class Solution { 2 public String countAndSay(int n) { 3 if (n <= 0) return ""; 4 int i = 1; 5 String current ...
分类:其他好文   时间:2014-05-16 21:27:59    阅读次数:267
Leetcode | Longest Palindromic Substring
Given a string S, find the longest palindromic substring in S. You may assume that the maximum length of S is 1000, and there exists one unique longes...
分类:其他好文   时间:2014-05-16 21:15:37    阅读次数:454
【LeetCode】Container With Most Water
Givennnon-negative integersa1,a2, ...,an, where each represents a point at coordinate (i,ai).nvertical lines are drawn such that the two endpoints of ...
分类:其他好文   时间:2014-05-16 19:42:17    阅读次数:286
【LeetCode】Merge Intervals
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].public class S...
分类:其他好文   时间:2014-05-16 08:44:29    阅读次数:276
Leetcode 树 Unique Binary Search Trees
本文为senlie原创,转载请保留此地址:http://blog.csdn.net/zhengsenlie Unique Binary Search Trees  Total Accepted: 13478 Total Submissions: 37858 Given n, how many structurally unique BST's (bin...
分类:其他好文   时间:2014-05-13 15:21:22    阅读次数:291
leetcode第一刷_Spiral Matrix
我觉得这个题好无聊啊,好端端一个数组,干嘛要跟比巴卜一样转一圈输出呢。。 思想很简单,每次从左到右,再从上到下,在从右到左,再从下到上。问题是每次到什么时候该改变方向。我的做法是用一个变量保存当前在第几层,这个层是相对于从外向内有几圈来说的。注意想清楚边界的话这个题一点也不难。有个细节,我的循环退出条件是访问的数跟矩阵总个数之间的关系,如果有一次在判断进入循环是条件是满足的,但是在循环内部不满足...
分类:其他好文   时间:2014-05-13 15:20:19    阅读次数:229
Best Time to Buy and Sell Stock
原题: Say you have an array for which the ith element is the price of a given stock on day i. If you were only permitted to complete at most one transaction (ie, buy one and sell one share of th...
分类:其他好文   时间:2014-05-13 14:12:41    阅读次数:342
Leetcode 贪心 Best Time to Buy and Sell StockII
本文为senlie原创,转载请保留此地址:http://blog.csdn.net/zhengsenlie Best Time to Buy and Sell Stock II  Total Accepted: 13030 Total Submissions: 36467 Say you have an array for which the ith ...
分类:其他好文   时间:2014-05-13 14:08:39    阅读次数:414
leetcode第一刷_Permutation Sequence
这道题还挺好的,如果你的思路是每次生成一个全排列,然后累计到k次,那么停下来吧,肯定超时了亲。。 微软今年的笔试题里有一道类似的,我之前已经提到过了,是只有0和1的字符串,求第k个排列是什么样子的。这道题比那个要难一些,但是总体的思路是一样的。假设有n个数要组成排列,求第k个排列。像填表一样,从高位往地位,逐个填写。先考虑有n-1个数要组成排列,最多有(n-1)!种情况,当第n个数加入后,第n个...
分类:其他好文   时间:2014-05-13 13:42:02    阅读次数:246
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