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Wargame narnia level 0 (中文攻略)
想写这个主要是因为我去谷歌搜到的攻略都是英文,看着有点吃力(菜B英语不好) , 然后就是分享交流技术。比较有意思的一个闯关游戏(适合新手) 网站是:http://overthewire.org/wargames/narnia/游戏主要涉及基础的漏洞利用(环境是LINUX下的)下面就开始吧,LINUX...
分类:其他好文   时间:2014-05-26 00:34:04    阅读次数:1073
Oracle分页语句
select * from (select A.*,rownum rd from (select * from [tablename] where [condition] order by [condition] ) A where rownum=[startpage*pagesize];1.sel...
分类:数据库   时间:2014-05-25 22:29:33    阅读次数:349
Wargame narnia level 1 (中文攻略)
拿着我们的第0关得到的密码XXXX进入第1关ssh narnia1@narnia.labs.overthewire.orgcat narnia1.c#include int main(){ int (*ret)(); if(getenv("EGG")==NULL){ ...
分类:其他好文   时间:2014-05-25 18:54:06    阅读次数:575
何时产生临时表?
我们在执行某些SQL语句的时候有可能会生成临时表.我们应该尽量的去避免临时表.因为临时表会浪费内存和时间.那么什么情况下会产生临时表呢?这是来自MYSQL官方的说明If there is an ORDER BY clause and a different GROUP BY clause[官方说明]...
分类:其他好文   时间:2014-05-25 11:25:04    阅读次数:199
android--WebView使用addJavascriptInterface在sdk 17的问题解决
官方给的说明: public void addJavascriptInterface (Object object, String name) Added in API level 1 Injects the supplied Java object into this WebView. The object is injected into the JavaScript...
分类:移动开发   时间:2014-05-25 09:02:35    阅读次数:520
Geeks : Kruskal’s Minimum Spanning Tree Algorithm 最小生成树
寻找图中最小连通的路径,图如下: 算法步骤: 1. Sort all the edges in non-decreasing order of their weight. 2. Pick the smallest edge. Check if it forms a cycle with the spanning tree formed so far. If cycle is n...
分类:其他好文   时间:2014-05-25 07:35:59    阅读次数:301
LeetCode: Spiral Matrix II [058]
【题目】 Given an integer n, generate a square matrix filled with elements from 1 to n2 in spiral order. For example, Given n = 3, You should return the following matrix: [ [ 1, 2, 3 ], [ 8, 9, 4 ], [ 7, 6, 5 ] ] 【题意】 给定整数n, 将1,2,3...nxn个数按螺旋旋转的方式填入n...
分类:其他好文   时间:2014-05-25 07:08:17    阅读次数:235
LeetCode: Permutation Sequence [059]
【题目】 The set [1,2,3,…,n] contains a total of n! unique permutations. By listing and labeling all of the permutations in order, We get the following sequence (ie, for n = 3): "123" "132" "213" "231" "312" "321" Given n and k, return the kth permutation ...
分类:其他好文   时间:2014-05-25 06:13:37    阅读次数:276
【LeetCode】Sort Colors
题目 Given an array with n objects colored red, white or blue, sort them so that objects of the same color are adjacent, with the colors in the order red, white and blue. Here, we will use the i...
分类:其他好文   时间:2014-05-24 20:30:21    阅读次数:342
SPOJ 3273 - Order statistic set , Treap
点击打开链接 题意: 集合S支持一下四种操作:   INSERT(S,x) :   如果S中没有x,则插入x DELETE(S,x):  如果S中有x,则删除x K-TH(S):            输出S中第K小的数 COUNT(S,x):    统计S中小于x的数有多少个 一共有Q(1 ≤ Q ≤ 200000)次操作。 Treap模板。。 #i...
分类:其他好文   时间:2014-05-24 18:03:11    阅读次数:213
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