题目内容 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 = {…

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…

题目内容 题目来源:LeetCode 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: The solution set must not contain duplicate triplets. For example, gi…

kSum问题是一类问题,基本的方法是两个循环,其他一个查找,但是今天碰到了一个超级棘手的问题,是3Sum问题的一个变型 问题:给定一个数组,给定一个整数k,要求找出在数组中找到3个整数,使得这三个整数的和与k的相差最小! 思路:最受不了这种最大值最小值类的问题啦!如果是个确定的数还能通过一些二分查找.hash查找这样的方法来找,但是最大最小这类问题,需要自己处理找不到的情况!如果找不到这个值的话怎么办?那么我就在数组查找到这个target前后的两个值,然后比较一下即可! 编程: 1)lower_…

描述 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: The solution set must not contain duplicate triplets. 示例 Given array S = [-1, 0, 1, 2…

这是悦乐书的第328次更新,第351篇原创 01 看题和准备 今天介绍的是LeetCode算法题中Easy级别的第198题(顺位题号是849).在一排座位中,1表示一个人坐在该座位上,0表示座位是空的.在这些座位中,至少有一个空座位,至少有一个人坐着.Alex想坐在座位上,以便他和离他最近的人之间的距离最远.返回距离最近的人的最大距离.例如: 输入:[1,0,0,0,1,0,1] 输出:2 说明:如果Alex坐在第二个空座位(seats[2]),那么离最近的人距离为2.如果Alex坐在任何其他空…

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 of the three integers. You may assume that each input would have exactly one solution. For example, given arr…

3Sum 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-descending order. (ie, a ≤ b ≤ c) The…

1).2sum 1.题意:找出数组中和为target的所有数对 2.思路:排序数组,然后用两个指针i.j,一前一后,计算两个指针所指内容的和与target的关系,如果小于target,i右移,如果大于,j左移,否则为其中一个解 3.时间复杂度:O(nlgn)+O(n) 4.空间:O(1) 5.代码: void twoSum(vector<int>& nums,int numsSize,int target,vector<vector<int>>& two…

1. Two Sum 题目链接 题目要求: Given an array of integers, find two numbers such that they add up to a specific target number. The function twoSum should return indices of the two numbers such that they add up to the target, where index1 must be less than ind…