摘要：Move Zeroes题目:Given an array nums, write a function to move all 0‘s to the end of it while maintaining the relative order of the non-zero elements.For... 阅读全文

摘要：Given a stringsconsists of upper/lower-case alphabets and empty space characters' ', return the length of last word in the string.If the last word doe... 阅读全文

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 integer... 阅读全文

摘要：##Roman to Integer > Given a roman numeral, convert it to an integer.首先介绍罗马数字罗马数字共有七个，即I(1)，V(5)，X(10)，L(50)，C(100)，D(500)，M(1000)。按照下面的规则可以表示任意正整数。重复... 阅读全文

摘要：Longest Common PrefixWrite a function to find the longest common prefix string amongst an array of strings.题目的意图It seems that it is not to check betwe... 阅读全文