from: http://zyan.cc/startssl/HTTPS(全称:Hypertext Transfer Protocol over Secure Socket Layer),是以安全为目标的HTTP通道,简单讲是HTTP的安全版。即HTTP下加入SSL层,HTTPS的安全基础是SSL,因此加密的详细内容请看SSL。 它是一个URI scheme(抽象标识符体系),句法类同http:体系。用于安全的HTTP数...【阅读全文】
You are given a binary tree in which each node contains a value. Design an algorithm to print all paths which sum up to that value. Note that it can be any path in the tree-it does not have to start at the root.思路:一层一层的遍历,保存当前节点到根节点的完整路径,然后从当前节点向上扫描,如果找到...【阅读全文】