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L1-001Hello World! print("Hello World!") L1-002 打印沙漏 import math n, c = input().split() n = int(n) h = int(math.sqrt((n + 1) // 2)) # 打印上半层沙漏 for i in 阅读全文
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反序列化一、类与对象php类与对象举例<?php class animal { public $name = 'dahuang';//define a virable public function sleep(){//define a simpe method echo $this->name . 阅读全文
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SQL注入一、基本语法用户登陆判断语句:SELECT * FROM users WHERE user='uname' AND password='pass' SELECT * FROM users WHERE user='name' AND password='' OR ''=''基于报错的检测方法 阅读全文