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摘要： Given an arraySofnintegers, are there elementsa,b,cinSsuch thata+b+c= 0? Find all unique triplets in the array which gives the sum of zero.Note:Elemen... 阅读全文

摘要： Reverse digits of an integer.Example1:x = 123, return 321Example2:x = -123, return -321click to show spoilers.Subscribeto see which companies asked th... 阅读全文

摘要： Write a function to find the longest common prefix string amongst an array of strings.Subscribeto see which companies asked this question比较每个字符串的每个字符，... 阅读全文

摘要： Given a roman numeral, convert it to an integer.Input is guaranteed to be within the range from 1 to 3999.Subscribeto see which companies asked this q... 阅读全文

摘要： Given an integer, convert it to a roman numeral.Input is guaranteed to be within the range from 1 to 3999.Subscribeto see which companies asked this q... 阅读全文

摘要： Givennnon-negative integersa1,a2, ...,an, where each represents a point at coordinate (i,ai).nvertical lines are drawn such that the two endpoints of ... 阅读全文

摘要： Determine whether an integer is a palindrome. Do this without extra space.click to show spoilers.Subscribeto see which companies asked this questionSh... 阅读全文

摘要： Implementatoito convert a string to an integer.Hint:Carefully consider all possible input cases. If you want a challenge, please do not see below and ... 阅读全文