3 Sum Closest. If I get an array and number I need to find the 3 numbers that

If I get an array and number I need to find the 3 numbers that their sum are close to the number that's given. HeyCoach offers personalised coaching for DSA, & System Design, and Data Science. I explain the question, go over how the logic / theory behind solving the question and finally solve i Can you solve this real interview question? 3Sum Closest - Given an integer array nums of length n and an integer target, find three integers in nums such that the sum is closest to target. Solution Mar 10, 2025 · LeetCode Q:16 ( Three Sum Closest {3Sum Closest} ) | JAVA Explained Exponentech 12. It works by using two pointers that move through the data structure to efficiently find a solution. Aug 1, 2025 · Given an array arr [] of n integers and an integer target, find the sum of triplets such that the sum is closest to target. 3Sum Closest. 3Sum Closest problem of Leetcode. 3Sum Closest Medium Given an array nums of n integers and an integer target, find three integers in nums such that the sum is closest to target. LeetCode Solutions in C++23, Java, Python, MySQL, and TypeScript. In this problem, you must find three integers in an array that sum up to a specific target value, with the closest sum. 65K subscribers Subscribe Can you solve this real interview question? 3Sum Closest - Given an integer array nums of length n and an integer target, find three integers at distinct indices in nums such that the sum is closest to target. Additionally, I'll share my LeetCode solution link for further reference. This helps in reducing the time complexity compared to In this article, we have explored an insightful approach/ algorithm to find the 3 elements in an array whose sum is equal to or close to the required answer. Better than official and forum solutions. Space complexity O (1). Second argument is an integer Can you solve this real interview question? 3Sum Closest - Given an integer array nums of length n and an integer target, find three integers in nums such that the sum is closest to target. For better experience watch at 1. Can you solve this real interview question? 3Sum Closest - Given an integer array nums of length n and an integer target, find three integers at distinct indices in nums such that the sum is closest to target. Problem Statement: Given an integer array nums of length n and an integer target, find three integers in nums such that the sum is closest…. co Can you solve this real interview question? 3Sum Closest - Given an integer array nums of length n and an integer target, find three integers at distinct indices in nums such that the sum is closest to target. ly/3MFZLIZJoin my free exclusive community built to empower programmers! - https://www. skool. Get expert mentorship, build real-world projects, & achieve placements in MAANG. Contribute to RodneyShag/LeetCode_solutions development by creating an account on GitHub. 3Sum Closest LeetCode Solution - Given integer array nums and integer target, find three integers in nums such that sum is closest to target. We'll have a couple of variables, min_difference and closest_sum, to remember the best we've seen so far. We'll explore the intuition behind the solution, discuss the approach, analyze the complexity, and provide a detailed explanation of the code. 25x Here, in this video we have discussed Three Pointer Technique for solving 3 Sum Closest Problem . 题解1 - 排序 + 2 Sum + 两根指针 + 优化过滤和 3 Sum 的思路接近，首先对原数组排序，随后将3 Sum 的题拆解为『1 Sum + 2 Sum』的题，对于 Closest 的题使用两根指针而不是哈希表的方法较为方便。 LeetCode Solutions in C++23, Java, Python, MySQL, and TypeScript. 题解1 - 排序 + 2 Sum + 两根指针 + 优化过滤和 3 Sum 的思路接近，首先对原数组排序，随后将3 Sum 的题拆解为『1 Sum + 2 Sum』的题，对于 Closest 的题使用两根指针而不是哈希表的方法较为方便。对于有序数组来说，在查找 Cloest 的值时其实是有较大的优化空间的。 Mar 18, 2024 · A quick and practical tutorial to finding the subset of numbers that add up the closest to a target number without exceeding it. 8K subscribers Subscribe Jul 31, 2024 · In this Leetcode 3Sum Closest problem solution we have given an array nums of n integers and an integer target, find three integers in nums such that the sum is closest to the target. Make use of appropriate data structures & algorithms to optimize your solution for time & space complexity & chec In this post, we are going to solve the 16. Feb 21, 2025 · Three Sum Closest - LeetCode Solution In this blog post, we'll dive into the Three Sum Closest problem, a popular coding challenge on LeetCode. Note: If there are multiple solutions, return the maximum one. Though straightforward, this method has a time complexity of O (n^3), making it less efficient for large arrays. Given an array, arr of integers, and another number target, find three integers in the array such that their sum is closest to the target. You may assume that each input would have exactly one solution. 🔹 Can you solve this real interview question? 3Sum - Given an integer array nums, return all the triplets [nums[i], nums[j], nums[k]] such that i != j, i != k, and j Can you solve this real interview question? 3Sum Closest - Given an integer array nums of length n and an integer target, find three integers at distinct indices in nums such that the sum is closest to target. Uncover the two-pointers technique with TypeScript examples. Y The "3Sum Closest" problem asks you to find a triplet in an array of integers such that the sum of the three numbers is closest to a given target value. Nov 12, 2020 · Practice closest sum coding problem. That’s the final value we are going to Jan 26, 2024 · Given an integer array nums of length n and an integer target, find three integers in nums such that the sum is closest to target. First, we can sort the array into ascending order. This video is a solution to LeetCode 16, 3Sum Closest. This problem 16. For each number: Fix the number as the first number (nums[start]). Return the sum of those three integers. In this problem, we will use the two-pointer approach after sorting the array. Note: If there are multiple sums closest to target, print the maximum one. May 20, 2021 · I'm trying to write simple code for that problem. 示例 1：输入：nums = [-1,2,1,-4], target = 1 输出：2 解释：与 target 最接近的和是 2 (-1 + 2 + 1 = 2)。示例 2：输入：nums = [0,0,0], target = 1 输出：0 解释：与 target 最接近的和是 0（0 + 0 + 0 = 0）。提示： * 3 <= nums. We would like to show you a description here but the site won’t allow us. This is where we need to keep score. Dec 19, 2024 · We can solve the problem using the Two Pointer Technique with a sorted array. 203 efficient solutions to LeetCode problems. Jul 23, 2025 · [Expected Approach] Using Hash Map - O (n^3) Time and O (n) Space [Naive Approach] Using Three Nested Loops - O (n^3) Time and O (1) Space The simplest approach is to generate all possible triplets using three nested loops and if the sum of any triplet is equal to zero then add it to the result. io/Code solutions in Python, Java, C++ and JS for this can be found at my GitHub repo here: h Three Sum Closest (LeetCode 16) | Full Solution with visual explanation | Interview Essential Nikhil Lohia 72. Remarkably, we can tie their complexity tightly to the complexity of corresponding k-SUM problems. Learn how to solve the 3Sum Closest problem, a nuanced variant of the classic 3Sum problem. Solutions in Python, Java, C++, JavaScript, and C#. Jul 29, 2024 · Master Data Structures & Algorithms for FREE at https://AlgoMap. Let's see code, 16. Given an integer array nums of length n and an integer target, find three integers at distinct indices in nums such that the sum is closest to target. Can you solve this real interview question? 3Sum Closest - Given an integer array nums of length n and an integer target, find three integers in nums such that the sum is closest to target. 3 Sum Closest. Every time we calculate a new sum, we check: is this new guy even closer than our current champion? Can you solve this real interview question? 3Sum Closest - Given an integer array nums of length n and an integer target, find three integers at distinct indices in nums such that the sum is closest to target. The closest sum could be the target itself or a number close to the target. Specifically, we introduce as All-ints 3-SUM (n,n,k) the following multivariate, multi-output variant of 3-SUM: given sets A,B of size n and set C of size k, determine for all c ∈ C whether there are a ∈ A and b ∈ B with a+b = c. The Best Place To Learn Anything Coding Related - https://bit. Return the sum of the three integers… 16. It’s all about precision and efficiency, making it a favorite in coding interviews. Assume that there will only be one solution. Problem Statement Given an array of n integers and an integer , find three integers in such that the sum is closest to . Jul 23, 2025 · The 3-Sum problem is a classic algorithmic problem where the objective is to find all unique triplets in an array that sum up to a specific target value, usually zero. Hope you like the vide Nov 16, 2019 · We need 3 nested loop to get all possible sums, and then get the sum that is closest to the target. Jul 27, 2021 · 16. The naive approach involves exploring all subsets of size three and calculating their sums to determine the closest to the target. This problem is a variation of the classic 3Sum problem and is frequently encountered in technical interviews because it tests your ability to combine sorting and two-pointer techniques to Nov 11, 2020 · Hello fellow devs 👋! Let’s look at a problem which is an extension of the last problem 3 Sum we solved. 1K subscribers Subscribe Dec 19, 2024 · Problem Statement The problem asks us to find three numbers in an array whose sum is closest to a given target value. I've thought about first to pop out Dec 23, 2022 · 3Sum Closest. 🚀 Day 36 | LeetCode Problem #16 – 3Sum Closest | DSA Practice On Day 36 of my DSA journey, I solved LeetCode 16: 3Sum Closest using a sorted array + two-pointer technique in C++. Example Input: nums = [-1, 2, 1, -4], **target = 1 **Expected Output**:2` Approach We can solve the problem using the Two Pointer T Can you solve this real interview question? 3Sum Closest - Given an integer array nums of length n and an integer target, find three integers at distinct indices in nums such that the sum is closest to target. Solution 2 We can make use of the similar idea of Question 15: 3Sum. 3 Sum - Problem Description Given an array A of N integers, find three integers in A such that the sum is closest to a given number B. Intuitions, example walk through, and complexity analysis. Jun 21, 2025 · Then, as I mentioned, we find the current_difference between this sum and our target. May 28, 2019 · Given an array nums of n integers and an integer target, find three integers in nums such that the sum is closest to target. This is an extension of the 3 Sum problem where the resulting sum needed not be exact. For 3Sum Closest, we are going to find the closest sum to the target. In-depth solution and explanation for LeetCode 16. Examples : Implementation of 3 Sum Closest Using Two Pointer Approach The two-pointer technique is a common approach used to solve problems involving arrays or linked lists. Jan 15, 2010 · Now we need to find three different integers in the array, whose sum is closest to the given integer S. (-1 + 2 + 1 = 2). Return the sum of the three integers. 3Sum Closest Medium Given an integer array nums of length n and an integer target, find three integers in nums such that the sum is closest to target. Time complexity is O (n 3). Mar 30, 2018 · 3Sum Closest is a follow-up question for two sum. May 25, 2023 · 3 Sum Closest | LeetCode | Three Pointer Approach #algorithm #leetcode #competitiveprogramming Code Divinity 39 subscribers Subscribed The sum that is closest to the target is 2. Here's a breakdown of how the solution works using Python: Detailed solution explanation for LeetCode problem 16: 3Sum Closest. 3Sum Closest in Python, Java, C++ and more. Mar 31, 2018 · I am trying to solve a problem where, Given an array S of n integers, find three integers in S such that the sum is closest to a given number, target. Given an array arr[] and an integer target, the task is to find the sum of three integers in arr[] such that the sum is closest to target. Second, we declare an integer variable called closetSum. Aug 5, 2021 · 3 sum Closest Leetcode | LeetCode 3Sum Closest | Two Pointer Approach | Leetcode Problem Tarun Khandagare 7. 3Sum Closest is a Leetcode medium level problem. Iterate through each number in the array. Jan 18, 2025 · To find the triplet in an array whose sum is closest to a given target, two approaches can be utilized. Given an integer array nums of length n and an integer target, find three integers at distinct indices in nums such that the sum is closest to target. length <= 1000 * -1000 <= nums [i] <= 1000 * -104 <= target <= 104 Can you solve this real interview question? 3Sum Closest - Given an integer array nums of length n and an integer target, find three integers in nums such that the sum is closest to target. If there exists more than one solution, any of them is ok. Jan 14, 2024 · Leetcode: 3sum Closest. Problem Constraints * -3 * 108 <= B <= 3 * 108 * 1 <= N <= 104 * -108 <= A[i] <= 108 Input Format First argument is an integer array A of size N. Problem Statement Given an integer Jul 11, 2019 · Hi guys, it’s time to do another problem, this time the problem is 3Sum Closest is medium level question in LeetCode. This is the essence of LeetCode 16: 3Sum Closest, a medium-level problem that’s a twist on the classic 3Sum challenge.   May 12, 2025 · The solution to the "3Sum Closest" problem involves finding three integers in an array such that their sum is closest to a given target number (goal). Sort the array Loop the array to get the first number nums[i] Use 2 pointers head and tail to loop the remaining array (head Can you solve this real interview question? 3Sum Closest - Given an integer array nums of length n and an integer target, find three integers in nums such that the sum is closest to target. Here's a high-level summary of the solution: Sort the array to prepare for the two-pointer method.

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