摘要：
Find the Nth number in Fibonacci sequence. A Fibonacci sequence is defined as follow: The first two numbers are 0 and 1. The i th number is the sum of i-1 th number and i-2 th number. The first te... 阅读全文
摘要：
Linked list is a one of the most important topic in interviews. Because it uses dynamic memory and short lines can finish its implement. It is often u... 阅读全文