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Leetcode: Longest Increasing Path in a Matrix
Given an integer matrix, find the length of the longest increasing path.From each cell, you can either move to four directions: left, right, up or dow...
分类:其他好文   时间:2016-01-25 11:30:43    阅读次数:341
$regex
db.transactions.find({"_id":{"$gt":ObjectId("16a4f6b7d1adb1796ce2e091")},"userId": {$regex:'89A105e1',$options: 'i'}}) * ^ $ db.transactions.find({"_i...
分类:其他好文   时间:2016-01-25 06:37:19    阅读次数:179
Implement Find and replace (find given pattern and replace it with a given string)
public static String FindAndReplace(String GivenString, String Pattern, String ReplaceString) { int j = 0; int tempi; ...
分类:其他好文   时间:2016-01-25 06:34:47    阅读次数:125
ZOJ 1530 - Find The Multiple
Given a positive integer n, write a program to find out a nonzero multiple m of n whose decimal representation contains only the digits 0 and 1. You m...
分类:其他好文   时间:2016-01-24 23:45:43    阅读次数:192
Jan 23 - Gray Code; BackTracking;
We can find the regular pattern in gray code, which is:the first of the combinations of n-digit gray code is exactly the combinations of (n-1)-digit g...
分类:其他好文   时间:2016-01-24 11:29:48    阅读次数:109
Remove Duplicates From Sorted List II
First we need to get the head node, use a boolean value to mark whether we find a new head or not. When we traverse the linked list,if(cur.val != cur....
分类:其他好文   时间:2016-01-24 08:09:34    阅读次数:147
*Find the Number Occurring Odd Number of Times
Given an array of positive integers. All numbers occur even number of times except one number which occurs odd number of times. Find the number in O(n...
分类:其他好文   时间:2016-01-24 07:04:03    阅读次数:211
Common Element in Two Sorted Sets
There are 2 sorted sets.Find the common elements of those setse.g.A={1,2,3,4,5,6}B={5,6,7,8,9}o/p C={5,6}Complexity should ne 0(n+m) where n and m is ...
分类:其他好文   时间:2016-01-24 06:57:54    阅读次数:176
centos yum 安装问题
yum[Errno256]Nomoremirrorstotry解决方法输入下面的命令即可解决问题:yum clean allyum makecache导致centos安装软件Error: Cannot find a valid baseurl for repo: base解决办法:echo "nam...
分类:其他好文   时间:2016-01-24 00:23:56    阅读次数:162
并查集(union/find)
在计算机科学中,并查集是一种树型的数据结构,其保持着用于处理一些不相交集合(DisjointSets)的合并及查询问题。有一个联合-查找算法(union-findalgorithm)定义了两个操作用于此数据结构:Find:确定元素属于哪一个子集。它可以被用来确定两个元素是否属于同一子集。Union..
分类:其他好文   时间:2016-01-23 21:44:21    阅读次数:159
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