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…

https://leetcode.com/problems/3sum/ 题目: Given an array S of n integers, are there elements a, b, c in S such that a + b + c = 0? Find all unique triplets in the array which gives the sum of zero. Note: Elements in a triplet (a,b,c) must be in non-des…

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, given array S = {-1…

Problem: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, given array S…

题目: 给定一个数组,和一个指定的值,找出数组中3个数,它的和最接近这个指定值,并返回这个和. 解法: 和上一题找3个数的和为0一样,先排序再遍历,这一次不需要记录路径. 代码: class Solution { public: int threeSumClosest(vector<int> &num, int target) { int result, min_gap = INT_MAX; sort(num.begin(), num.end()); //先排序 ; a < nu…

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, given array S = {-1 2…

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, given array S = {-…

一.题目描写叙述 二.解题技巧 该题与3Sum的要求类似.不同的是要求选出的组合的和与目标值target最接近而不一定相等.但实际上,与3Sum的算法流程思路类似,先是进行排序.然后顺序选择数组A中的下标为i的元素值作为组合中三个数的最小值,进而寻找另外两个更大的值,最后求出三个数的和.只是的地方在于这里是寻找最靠近给定值.寻找最靠近的值就无全部反复的事情了,所以能够不考虑夹逼的过程中的越过同样元素的过程,尽管越过同样的元素速度会快一些,可是代码长度也会加长. 这道题难的地方可能在于刚開始这样的…

我现在在做一个叫<leetbook>的免费开源书项目,力求提供最易懂的中文思路,目前把解题思路都同步更新到gitbook上了,需要的同学可以去看看 书的地址:https://hk029.gitbooks.io/leetbook/ 16. 3Sum Closest [M] Given an array S of n integers, find three integers in S such that the sum is closest to a given number, target.…

# -*- 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…