摘要：
The code base version is an integer start from 1 to n. One day, someone committed a bad version in the code case, so it caused this version and the fo 阅读全文
摘要：
Calculate the (a^n) % b where a, b and n are all 32bit integers. Calculate the (a^n) % b where a, b and n are all 32bit integers. Calculate the (a^n) 阅读全文
摘要：
The diameter of a tree (sometimes called the width) is the number of nodes on the longest path between two leaves in the tree. The diagram below shows 阅读全文