For any 4-digit integer except the ones with all the digits being the same, if we sort the digits in non-increasing order first, and then in non-decre ...
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其他好文 时间:
2020-02-02 13:39:18
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58
前言 Vulnerability: Command Injection LOW级别 代码: <?php if( isset( $_POST[ 'Submit' ] ) ) { // 几首一个变量为ip的参数 $target = $_REQUEST[ 'ip' ]; // 判断系统 if( stris ...
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其他好文 时间:
2020-02-02 11:46:08
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77
1. 使用dvwa靶机进行sql注入实战(注:当前靶机安全级别为low) 打开sql漏洞,发现输入不同的数字会返回不同的信息, 先尝试手工判断是否存在sql注入 一般sql注入语句像这样,我们构造的是后面两个单引号里面的内容 select * from users where userid='*' ...
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数据库 时间:
2020-02-01 23:33:31
阅读次数:
114
A Binary Search Tree (BST) is recursively defined as a binary tree which has the following properties: The left subtree of a node contains only nodes ...
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其他好文 时间:
2020-02-01 19:43:59
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85
Given an increasing sequence S of N integers, the median is the number at the middle position. For example, the median of S1 = { 11, 12, 13, 14 } is 1 ...
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其他好文 时间:
2020-02-01 16:07:53
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90
A number that will be the same when it is written forwards or backwards is known as a Palindromic Number. For example, 1234321 is a palindromic number ...
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其他好文 时间:
2020-02-01 11:00:07
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87
The Japanese language is notorious for its sentence ending particles. Personal preference of such particles can be considered as a reflection of the s ...
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其他好文 时间:
2020-02-01 10:28:39
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61
命令注入(Command Injection)是指通过提交恶意构造的参数破坏命令语句结构。从而达到执行恶意命令的目的。 查看命令注入的流程: 1;查看是否调用系统命令。 2;函数以及函数的参数是否可控。 3;是否拼接命令注入。 下面我们使用dvwa来做测试。 A;我们先将安全等级调整为“low” 1 ...
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Web程序 时间:
2020-02-01 10:18:43
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121
It is vitally important to have all the cities connected by highways in a war. If a city is occupied by the enemy, all the highways from/toward that c ...
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其他好文 时间:
2020-02-01 01:04:58
阅读次数:
91
To evaluate the performance of our first year CS majored students, we consider their grades of three courses only: C - C Programming Language, M - Mat ...
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其他好文 时间:
2020-01-31 23:03:20
阅读次数:
78