leetcode564题目地址 Given an integer n, find the closest integer (not including itself), which is a palindrome. The 'closest' is defined as absolute difference minimized between two integers. Example 1: Input: "123" Output: "121" Note: The…

题目如下: 解题思路:既然是要求回文字符串,那么最终的输出结果就是对称的.要变成对称字符串,只要把处于对称位置上对应的两个字符中较大的那个变成较小的那个即可,假设n=1234,1和4对称所以把4变成1,2和3对称把3变成2,得到1221,看起来好像没问题了.可是如果n=1283,按照这个方法得到的结果是1221,而预期的结果应该是1331,所以需要考虑到进位和退位的问题.这就有点复杂了,简单点的方法也有,就是把进位和退位的所有情况都列举出来再做比较,得出差值最小的那个.例如n=1283,按照对称…

Given an integer n, find the closest integer (not including itself), which is a palindrome. The 'closest' is defined as absolute difference minimized between two integers. Example 1: Input: "123" Output: "121" Note: The input n is a po…

乘风破浪:LeetCode真题_016_3Sum Closest 一.前言      这一次,问题又升级了,寻找的是三个数之和最靠近的某个数,这是非常让人难以思考的,需要把三个数相加之后和最后给的目标进行比较,看看接近的程度,选择最接近的.不一定是等于目标.那么我们又该怎么做呢?? 二.3Sum Closest 2.1 问题 2.2 分析与解决 由上面的题意我们可以知道上一次的3sum所用的算法这边可能用不上了,需要进行改进.比如我们可以设想一个变量使得a+b+c≠target,但是a+b+c+…

Given an integer n, find the closest integer (not including itself), which is a palindrome. The 'closest' is defined as absolute difference minimized between two integers. Example 1: Input: "123" Output: "121" Note: The input n is a po…

Given an integer n, find the closest integer (not including itself), which is a palindrome. The 'closest' is defined as absolute difference minimized between two integers. Example 1: Input: "123" Output: "121"  Note: The input n is a p…

# -*- coding: utf8 -*-'''__author__ = 'dabay.wang@gmail.com' 16: 3Sum Closesthttps://oj.leetcode.com/problems/3sum-closest/ Given an array S of n integers, find three integers in S such that the sum is closest to a given number, target.Return the sum…

一天一道LeetCode系列 (一)题目: Given an array S of n integers, find three integers in S such that the sum is closest to a given number, target. Return the sum of the three integers. You may assume that each input would have exactly one solution. For example,…

In a row of seats, 1 represents a person sitting in that seat, and 0 represents that the seat is empty.  There is at least one empty seat, and at least one person sitting. Alex wants to sit in the seat such that the distance between him and the close…

https://leetcode.com/problems/3sum-closest/ 题目: Given an array S of n integers, find three integers in S such that the sum is closest to a given number, target. Return the sum of the three integers. You may assume that each input would have exactly o…