zhangbaochong

摘要： 题目：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 inte... 阅读全文

摘要： 题目：Given an arraynums, write a function to move all0's to the end of it while maintaining the relative order of the non-zero elements.For example, giv... 阅读全文