一些技术职位的技术笔试题，很多公司都用到的，掌握这些是必须的-Number of technical jobs technical pen questions, many companies are used, it is necessary to master these

一个经典递归算法 ，C,C++大公司常考的笔试题归类后作的一个递归算法，以后直接套用就行-A classic recursive algorithm, C, C++ large companies often test questions categorized pen made after a recursive algorithm, applied on the line directly after the