js获取地理位置坐标
直接上代码： var show=function(position){ console.log("x="+position.coords.longitude); console.log("y="+position.coords.latitude ...
PAT-A 真题- 1021. Deepest Root
原题干：A graph which is connected and acyclic can be considered a tree. The height of the tree depends on the selected root. Now you are supposed to find the root that results in a highest tree. Such a root is called the de ...
寻找那些珍贵的回忆--网页历史记录（快照）查询
转眼间就2018年了，明天就是除夕了。想想在13年前开始接触计算机，用和楼下公用的0.5Mbps的电话线拨号上网，长城牌子的电脑，大屁股显示器，这十多年科技的发展真是快啊...突然想到能不能找回童年的回忆........遂猎奇到了一个很不错的网站，可以 ...
PAT-A 真题- 1013. Battle Over Cities
原题干：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 city are closed. We must know immediately if we need to repair any other ...
C语言缓冲区溢出原理与实践
我们都听说过缓冲区漏洞，那么具体原理是怎样的呢？首先我们看这个例子：#include<stdio.h> int main(){ int i=0; int a[]={1,2,3,4,5,6,7,8,9,10}; for(i=0;i<=11;i++){ printf("Hello World!\n", ...