3sum专题
LeetCode - 15. 3Sum
15. 3Sum Problem's Link ---------------------------------------------------------------------------- Mean: 给定一个数列，找出这个数列中和为0的三元组. analyse: 时间复杂度：O(n^2) 思路很简单，注意一下去重的方法. Time comple
LeetCode 16 3Sum Closest
题意： 给出数组s和目标target，要求从中选出3个数字，使其相加的和最接近target。 思路： x sum系列的题目，在这里做一个总结。 最经典的情况为2 sum问题，即给出s和target找出s[i] + s[j] = target。 可以使用枚举s[i]判断target - s[i]是否在s中出现且与s[i]不同的O(nlogn)方法，用map或排序后二分查找的方式均可。
3Sum java leetcode
Given an array S of n integers, are there elementsa,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 dupl
3Sum Closest问题及解法
问题描述： 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
【LeetCode最详尽解答】15-三数之和 3sum
欢迎收藏Star我的Machine Learning Blog:https://github.com/purepisces/Wenqing-Machine_Learning_Blog。如果收藏star, 有问题可以随时与我交流, 谢谢大家！ 链接: 15-三数之和 直觉 示例: 输入: nums = [-1, 0, 1, 2, -1, -4] 输出: [[-1, -1, 2], [-1
Leet Code Medium 15 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
[LeetCode] 015--3Sum --Medium--
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)
LeetCode 题解(270) : 3Sum Smaller
题目： Given an array of n integers nums and a target, find the number of index tripletsi, j, k with 0 <= i < j < k < n that satisfy the conditionnums[i] + nums[j] + nums[k] < target. For example, gi
[LeetCode] 16. 3Sum Closest
题目内容 https://leetcode-cn.com/problems/3sum-closest/ 给定一个包括 n 个整数的数组 nums 和 一个目标值 target。找出 nums 中的三个整数，使得它们的和与 target 最接近。返回这三个数的和。假定每组输入只存在唯一答案。 题目思路 我用的暴力破解法。先把数组排序好，然后开始定位。先定位好两个数，然后来看第三个数。因为
《leetCode》：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 exa
《leetCode》：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) mus
LeedCode·16. 3Sum Closest
题目： Given an array nums of n integers and an integer target, find three integers in nums such that the sum is closest to target. Return the sum of the three integers. You may assume that each input w
LeetCode·15. 3Sum
题目： Given an array nums of n integers, are there elements a, b, c in nums 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 c
leetcode15-3Sum
题目 给你一个整数数组 nums ，判断是否存在三元组 [nums[i], nums[j], nums[k]] 满足 i != j、i != k 且 j != k ，同时还满足 nums[i] + nums[j] + nums[k] == 0 。请 你返回所有和为 0 且不重复的三元组。 注意：答案中不可以包含重复的三元组。 示例 1： 输入：nums = [-1,0,1,2,-1,-4] 输出
16 3Sum Closest
类似的题目有 1 TwoSum 15 3Sum 18 4Sum public static int threeSumClosest(int[] nums, int target) {Arrays.sort(nums);int minMinus = 10000;int result = 0;int sum = 0;for (int i = 0; i < nums.length; i++) {
LeetCode 2.1.8 3Sum
问题描述：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: • Elements in a triplet (a; b; c)
LeetCode 15 3Sum
问题描述： 思路描述： 先fix一个数，然后去找另外两个数，我们只要找到两个数且和为第一个fix数的相反数就行了，既然另外两个数不能使用Two Sum的那种解法来找，如果能更有效的定位呢？我们肯定不希望遍历所有两个数的组合吧，所以如果数组是有序的，那么我们就可以用双指针（头指针和尾指针）以线性时间复杂度来遍历所有满足题意的两个数组合。 本人不熟悉这个用法，记录一下。
LeetCode OJ:3Sum
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 triple
【LeetCode算法练习（C++）】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. For example, given array S = [-1, 0, 1
【LeetCode算法练习（C++）】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 ex
LeetCode16:3Sum Closest
思路：先将数组排序，固定第一个数k，然后设定两个指针i和j，i从k+1开始，j从nums.length-1开始，每次求nums[i]+nums[j]+nums[k]到target的距离，即绝对值。用一个变量保存距离，一个变量保存三个数的和，每次与之前的距离比较，如果比之前的距离小，则更新三个数的和，同时更新距离，如果nums[i]+nums[j]+nums[k]大于target,则将j左移，如
Leetcode || 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
3Sum Smaller
这题是允许重复的数字的，因为只要保证下标满足i, j, k with 0 <= i < j < k < n就好。 所以不需要开始的去重！ 再有，这种求小于某值或是大于某值的，看好了，求数量是坐标的相减 public class Solution {public int threeSumSmaller(int[] nums, int target) {if (nums == null ||
【LeetCode】算法系列（Algorithms）（一）——2sum，3sum，3sum Closeset
本系列记录了博主在刷LeetCode过程中的笔记。更新于2019.5.13。 ps：今天是母亲节，祝所有的母亲们节日快乐，健康幸福！ 文章目录 1. 2Sum题目答案 15. 3sum题目答案 16. 3Sum Closest题目答案 1. 2Sum 题目难度： easy 题目 Given an array of integers, return indices of
leetcode:3sum closet
题目：给一个数组和给定的目标值，要求在数组里找出三个元素，这三个元素的和最接近目标值，当然等于是最好的。 用3sum的方法，把判定条件作些修改。 int twoSum(vector<int> &num, int start, int target){if(num.size() < 3 || start >= num.size())return -target;int head =