Leo ICer的博客

9.Palindrome Number 问题： Determine whether an integer is a palindrome. Do this without extra space. 解析： 什么是回文数？ 答案：“回文”是指正读反读都能读通的句子，它是古今中外都有的一种修辞方式和文字游戏，如“我为人人，人人为我”等。在数学中也有这样一类数字有这样的特征，成为

题目 Reverse digits of an integer. Example1: x = 123, return 321 Example2: x = -123, return -321 Note: The input is assumed to be a 32-bit signed integer. Your function should return 0 when the

Given an array of integers, return indices of the two numbers such that they add up to a specific target. You may assume that each input would have exactly one solution, and you may not use the same