摘要: Write a program to check whether a given number is an ugly number. Ugly numbers are positive numbers whose prime factors only include 2, 3, 5. For exa 阅读全文
posted @ 2016-02-26 19:33 python挖掘 阅读(172) 评论(0) 推荐(0) 编辑
摘要: Write an algorithm to determine if a number is "happy". A happy number is a number defined by the following process: Starting with any positive intege 阅读全文
posted @ 2016-02-26 19:08 python挖掘 阅读(363) 评论(0) 推荐(0) 编辑
摘要: Given a non-negative integer num, repeatedly add all its digits until the result has only one digit. For example: Given num = 38, the process is like: 阅读全文
posted @ 2016-02-26 18:29 python挖掘 阅读(158) 评论(0) 推荐(0) 编辑
摘要: You are playing the following Nim Game with your friend: There is a heap of stones on the table, each time one of you take turns to remove 1 to 3 ston 阅读全文
posted @ 2016-02-26 18:20 python挖掘 阅读(218) 评论(0) 推荐(0) 编辑