Take The Maze 首先拿进PEID里查一下有没有壳: 无壳,果断拖进IDA.可是Graph View中找不到主程序的位置,在函数表里寻找主函数: 函数太多阻扰了我们找到主程序,运行一下程序找一些关键词来搜索主程序位置: 得知主程序中应当含有“welcome to zsctf!”字符串,在IDA中搜索来找到主程序: 成功找到主函数,双击进入主函数,F5出伪代码: 可以看出输入的KEY为24位由0-9,a-f构成的字符串,且需要根据sub_45E593()的返回值确定是否为正确KEY.其他…
In a 1 million by 1 million grid, the coordinates of each grid square are (x, y) with 0 <= x, y < 10^6. We start at the source square and want to reach the target square. Each move, we can walk to a 4-directionally adjacent square in the grid that…
There is a ball in a maze with empty spaces and walls. The ball can go through empty spaces by rolling up (u), down (d), left (l) or right (r), but it won't stop rolling until hitting a wall. When the ball stops, it could choose the next direction. T…
There is a ball in a maze with empty spaces and walls. The ball can go through empty spaces by rolling up, down, left or right, but it won't stop rolling until hitting a wall. When the ball stops, it could choose the next direction. Given the ball's …
使用一个队列,采用层层扩张的方式,寻找迷宫最优的路径信息,再用一个迷宫节点数组记录行走信息方向常量定义: public interface Constant { // 右方向 int RIGHT = 0; // 下方向 int DOWN = 1; // 左方向 int LEFT = 2; // 上方向 int UP = 3; } 所用到的链式队列定义(jdk自带的队列或集合也可以实现此功能) public class LinkQueue<T> { // 指向头节点(队头) private En…
此次迷宫深度优先遍历寻找路径采用栈结构,每个节点都有固定的行走方向(右下左上),除非一个方向走不通,不然会一条道走到黑. 如果路径存在,打印出行走路径,否则打印出迷宫不存在有效路径. 方向常量定义: public interface Constant { // 右方向 int RIGHT = 0; // 下方向 int DOWN = 1; // 左方向 int LEFT = 2; // 上方向 int UP = 3; } 所用到的栈定义(jdk自带的栈或集合也可以实现此功能) /** * 描述:…
请点击页面左上角 -> Fork me on Github 或直接访问本项目Github地址:LeetCode Solution by Swift 说明:题目中含有$符号则为付费题目. 如:[Swift]LeetCode156.二叉树的上下颠倒 $ Binary Tree Upside Down 请下拉滚动条查看最新 Weekly Contest!!! Swift LeetCode 目录 | Catalog 序 号 题名Title 难度 Difficulty 两数之…
Search GO 说明:输入题号直接进入相应题目,如需搜索含数字的题目,请在关键词前加单引号 Problem ID Title Source AC Submit Y 1000 A+B Problem 10983 18765 Y 1036 [ZJOI2008]树的统计Count 5293 13132 Y 1588 [HNOI2002]营业额统计 5056 13607 1001 [BeiJing2006]狼抓兔子 4526 18386 Y 2002 [Hnoi2010]Bounce 弹飞绵羊 43…
本文来自 中关村ZOL 「3D 立体显示」可说是近来娱乐产业相当热门的话题,不但有好莱坞推出<阿凡达>等卖座 3D 立体电影,全球各大家电厂商也积极布局准备推出一系列支持 3D 立体显示的播放机与电视机等家电产品,NVIDIA 也推出支持 3D 立体显示卡与周边,甚至连 SCE 与任天堂也陆续发表 PS3 与 NDS 后继机种的 3D 立体显示支持. 本文将针对 3D 立体显示的原理与应用作一简单介绍,了解各种 3D 立体显示是如何重现现实世界的立体感,以及 3D 立体显示在游戏领域的实际应用…
There is a ball in a maze with empty spaces and walls. The ball can go through empty spaces by rolling up (u), down (d), left (l) or right (r), but it won't stop rolling until hitting a wall. When the ball stops, it could choose the next direction. T…
There is a ball in a maze with empty spaces and walls. The ball can go through empty spaces by rolling up, down, left or right, but it won't stop rolling until hitting a wall. When the ball stops, it could choose the next direction. Given the ball's …
There is a ball in a maze with empty spaces and walls. The ball can go through empty spaces by rolling up, down, left or right, but it won't stop rolling until hitting a wall. When the ball stops, it could choose the next direction. Given the ball's …