2016年5月9日
Implement Queue using Stacks
摘要： mplement the following operations of a queue using stacks. push(x) -- Push element x to the back of queue. pop() -- Removes the element from in front 阅读全文
posted @ 2016-05-09 20:16 YuriFLAG 阅读(148) 评论(0) 推荐(0)
Power of Four
摘要： Given an integer (signed 32 bits), write a function to check whether it is a power of 4. Example:Given num = 16, return true. Given num = 5, return fa 阅读全文
posted @ 2016-05-09 19:54 YuriFLAG 阅读(135) 评论(0) 推荐(0)