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hthhit：
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回溯算法之N皇后问题（java实现） -
huntfor：
249326109 写道这个算法的复杂度有考虑过么O(n^2) ...
[leetcode]Longest Valid Parentheses -
249326109：
这个算法的复杂度有考虑过么
[leetcode]Longest Valid Parentheses -
huntfor：
249326109 写道又搜到你的了 你怎么搜的，为啥我搜不到 ...
[leetcode]Sort Colors -
249326109：
又搜到你的了
[leetcode]Sort Colors
文章列表
Multiply Strings
Given two numbers represented as strings, return multiplication of the numbers as a string.Note: The numbers can be arbitrarily large and are non-negative.
让大家见识见识第一次的算法提交之后有多坑。
最后一个case没过，我忍了，但是尼玛这个结果是什么情况，这么长的结果，就一位错了，debug都不能啊魂淡，你要闹哪样啊小婊砸。
然后那晚上就抓狂了，放了一段时间之后，再做，借鉴别人的思路，有了以 ...
Largest Rectangle in Histogram
Given n non-negative integers representing the histogram's bar height where the width of each bar is 1, find the area of largest rectangle in the histogram.Above is a histogram where width of each bar is 1, given height = [2,1,5,6,2,3].The largest rectangle is show ...
不得不说，这个算法还是不错的，就是Collections.sort（）方法不会用。。。
新博文地址：[leetcode]Merge Intervals
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] ...
免安装版mysql的安装配置与卸载
- 博客分类：
- 软件工程
真是蛋疼啊，这么长时间不碰工程上的东西，手生的不得了，配置个环境浪费了半天时间。拙计。
下午下载了mysql，现在官网上都是免安装的？看着教程配置完之后，真是手贱啊，把权限修改了，结果自己本地都进不去了，只好又把mysql服务卸载了，不过正因为如此学到了SC命令的一些运用。
具体mysql免安装版的配置如下：
写道
解压到自定义目录，我这里演示的是D:\wamp\mysql\复制根目录下的my-default.ini,改名为my.ini,my.ini用下面内容替换#以下是复制内容，这行可不复制[client]port=3306default-character-set=utf8#客户端 ...
新博文地址：[leetcode]Spiral Matrix
Spiral Matrix
Given a matrix of m x n elements (m rows, n columns), return all elements of the matrix in spiral order.For example,Given the following matrix:[ [ 1, 2, 3 ], [ 4, 5, 6 ], [ 7, 8, 9 ]]
这道题是《剑指offer》上的例题，上面的解法很简单，但是我没用，我的算法更简单，而且也是O(m*n)的复杂度，但是需要O(m*n)的 ...
新博文地址：[leetcode]4Sum
4Sum
Given an array S of n integers, are there elements a, b, c, and d in S such that a + b + c + d = target? Find all unique quadruplets in the array which gives the sum of target.Note:Elements in a quadruplet (a,b,c,d) must be in non-descending order. (ie, a ≤ ...
新博客地址：
[leetcode]Regular Expression Matching
Regular Expression Matching
Implement regular expression matching with support for '.' and '*'.'.' Matches any single character.'*' Matches zero or more of the preceding element.The matching should cover the entire input string (not partia ...
这道题。。。。简直了。。。
新博文地址：[leetcode]Insert Interval
Insert Interval
Given a set of non-overlapping intervals, insert a new interval into the intervals (merge if necessary).You may assume that the intervals were initially sorted according to their start times.Example 1:Given intervals [1,3],[6,9], ins ...
新博文地址：[leetcode]Substring with Concatenation of All Words
Substring with Concatenation of All Words
You are given a string, S, and a list of words, L, that are all of the same length. Find all starting indices of substring(s) in S that is a concatenation of each word in L exactly once and without ...
Best Time to Buy and Sell Stock III
Say you have an array for which the ith element is the price of a given stock on day i.Design an algorithm to find the maximum profit. You may complete at most two transactions.Note:You may not engage in multiple transactions at the same time (ie, you must sell t ...
新博文地址：[leetcode]Gas Station
Gas Station
There are N gas stations along a circular route, where the amount of gas at station i is gas[i].You have a car with an unlimited gas tank and it costs cost[i] of gas to travel from station i to its next station (i+1). You begin the journey with an empty ta ...
新博文地址：
[leetcode]Median of Two Sorted Arrays
Median of Two Sorted Arrays
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 O(log (m+n)).
这道题想了很长时间，不会做，看到这位大神的通用求法，瞬间跪了。
算法思想：
Assume that the nu ...
新博文地址：[leetcode]Minimum Window Substring
Minimum Window Substring
Given a string S and a string T, find the minimum window in S which will contain all the characters in T in complexity O(n).For example,S = "ADOBECODEBANC"T = "ABC"Minimum window is "BANC".Note:If t ...
新博文地址：[leetcode]First Missing Positive
First Missing Positive
Given an unsorted integer array, find the first missing positive integer.For example,Given [1,2,0] return 3,and [3,4,-1,1] return 2.Your algorithm should run in O(n) time and uses constant space.
这是一道好题哇，我实在没想到用O(1)的空间做解，用的O(n)，后来看了网 ...
新博文地址：[leetcode]String to Integer (atoi)
String to Integer (atoi)
我操，梅西绝杀。。。
一会儿看德国。先把这道题弄一下
Implement atoi to convert a string to an integer.Hint: Carefully consider all possible input cases. If you want a challenge, please do not see below and ask yourself what are the possible input cas ...