Aug 13, 2025 · To know more about the implementation please refer to 2 Sum - Pair Sum Closest to Target using Binary Search. A collection of LeetCode questions to ace the coding interview! - Created using [LeetHub v2](https://github. #leetcode #coding #programming #algorithms #interviewprep #automation #Two Sum #Easy_leetcodemore 203 efficient solutions to LeetCode problems. Can you solve this real interview question? Closest Subsequence Sum - You are given an integer array nums and an integer goal. Return the indices of the two numbers, index1 Given an array nums of n integers, find two integers in nums such that the sum is closest to a given number, target. In-depth solution and explanation for LeetCode 1. e. Example: Given nums = [2, 7, 11, 15], target = 9, Because nums[0] + nums[1] = 2 + 7 = 9, return [0, 1]. 3Sum Closest problem of Leetcode. length <= 10^4 -10^9 <= nums[i] <= 10^9 -10^9 <= target <= 10^9 Approach 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. Constraints 2 <= nums. 1K subscribers Subscribe Can you solve this real interview question? Closest Subsequence Sum - You are given an integer array nums and an integer goal. That is, if the sum of the subsequence's elements is sum, then you want to minimize the absolute difference abs(sum - goal). Example 1: Input: nums = [3 Can you solve this real interview question? Minimum Size Subarray Sum - Given an array of positive integers nums and a positive integer target, return the minimal length of a subarray whose sum is greater than or equal to target. length. If there is no such subarray, return 0 instead. Aug 13, 2025 · A simple solution is to consider every pair and keep track of the closest pair (the absolute difference between pair sum and target is minimum). Grind 75 is a better version of Blind 75 which goes beyond 75 questions. The possibilities are endless. Nov 11, 2020 · Hello fellow devs 👋! Let’s look at a problem which is an extension of the last problem 3 Sum we solved. If an exact zero sum is found, we return immediately. Can you solve this real interview question? Number of Subsequences That Satisfy the Given Sum Condition - You are given an array of integers nums and an integer target. Return the number of non-empty subsequences of nums such that the sum of the minimum and maximum element on it is less or equal to target. Two Sum – Leetcode Solution is a Leetcode easy level problem. 3 Sum Closest. You want to choose a subsequence of nums such that the sum of its elements is the closest possible to goal. Return the minimum possible value of Jul 1, 2022 · Different approaches to tackle the Two Sum problem with explanation and time and space complexity Feb 21, 2019 · Given an int array nums and an int target. , have the largest difference between them). com/arunbhardwaj/LeetHub-2. Example 1: Input: nums = [1, 2, 3, 4, 5], tar Jul 23, 2025 · The 2-Sum problem is a popular algorithmic challenge where the goal is to identify two distinct elements in an array whose sum equals a specific target. You can customize the available time you have, difficulty, topics, etc. 0) - i-anshigupta/leetcode 2 days ago · Example 1: [https://assets. If there are multiple answers, return the number with the largest value. 本文始发于微信公众号《面向大象编程》，作者 nettee。转载请注明出处。本期例题： LeetCode 167 - Two Sum II - Input array is sorted（Easy）给定一个已按照升序排列的有序数组，找到两个数使得它们相加之和… Can you solve this real interview question? 4Sum - Given an array nums of n integers, return an array of all the unique quadruplets [nums[a], nums[b], nums[c], nums[d Two Sum - Given an array of integers nums and an integer target, return indices of the two numbers such that they add up to target. Three Sum Closest (LeetCode 16) | Full Solution with visual explanation | Interview Essential 3Sum (Updated Solution) - Leetcode 15 - Two Pointers (Python) Two Sum Problem Statement Given an array of integers nums and an integer target, return indices of the two numbers such that they add up to target. Jun 19, 2019 · 这篇博客详细介绍了LeetCode中的Two Sum、3Sum和3Sum Closest问题的解题思路。针对Two Sum问题，提出了三种解法，包括双循环解法、哈希表解法以及排序后的双指针解法。对于3Sum和3Sum Closest，作者指出可以借鉴Two Sum的排序双指针解法，同时注意避免重复解的出现。 1 2 3 4 5 6 7 8 91011121314151617181920212223242526272829303132333435363738394041424344 Can you solve this real interview question? Two Sum II - Input Array Is Sorted - Given a 1-indexed array of integers numbers that is already sorted in non-decreasing order, find two numbers such that they add up to a specific target number. Two Sum - Given an array of integers nums and an integer target, return indices of the two numbers such that they add up to target. The problem emphasizes understanding array manipulation and optimizing search operations through hashing. png] Input: mat = [ [1,1,3,2,4,3,2], [1,1,3,2,4,3,2], [1,1,3,2,4,3,2]], threshold = 4 Output: 2 Explanation: The maximum side length of square with sum less than 4 is 2 as shown. We have explained 3 different approaches which involves the use of Binary Search and Two Pointer technique. It tests your ability to use arrays and hash maps efficiently. You may assume that each input would have exactly one solution. You can return the answer in any order. 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. Given an array nums of n integers, find two integers in nums such that the sum is closest to a given number, target. It’s asking how many points from the square are in the We have explained how to solve the 2 Sum Closest problem that is Find 2 elements with sum closest to a target efficiently. LeetCode Solutions in C++23, Java, Python, MySQL, and TypeScript. Jul 23, 2025 · We have already discussed the Naive and Expected Approach in 2 Sum - Pair Sum Closest to Target. Since the answer may be too large, return it modulo 109 + 7. Jun 26, 2023 · 🎯 Variation of Two Sum Questions Here are 25 questions that are exact similar to the classic Two Sum problem , with slight variations. Intuitions, example walk through, and complexity analysis. Contribute to RodneyShag/LeetCode_solutions development by creating an account on GitHub. Return the minimum possible value of Feb 21, 2019 · Given an int array nums and an int target. Let's see code, 16. com/uploads/2019/12/05/e1. Jul 1, 2022 · Different approaches to tackle the Two Sum problem with explanation and time and space complexity LeetCode Solutions in C++23, Java, Python, MySQL, and TypeScript. Let these two numbers be numbers[index1] and numbers[index2] where 1 <= index1 < index2 <= numbers. Jan 20, 2021 · From an array of integers find two integers which sum up to a given target. Dec 16, 2015 · If the sum of the three numbers is greater than target t a r g e t, we move k k one place to the left, otherwise, we move j j one place to the right. The Two Sum problem is a popular coding challenge that appears frequently in technical interviews and coding platforms like LeetCode. Can you solve this real interview question? Find K Closest Elements - Given a sorted integer array arr, two integers k and x, return the k closest integers to x in the array. [Expected Approach] Two Pointer Technique - O (n × logn + n) Time and O (1) Space 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. Example 1: Input: nums = [1, 2, 3, 4, 5], tar Can you solve this real interview question? Two Sum II - Input Array Is Sorted - Given a 1-indexed array of integers numbers that is already sorted in non-decreasing order, find two numbers such that they add up to a specific target number. 01K subscribers 116 views 1 year ago Find Closest Number to Zero - Given an integer array nums of size n, return the number with the value closest to 0 in nums. If you have a Oct 22, 2017 · The core of the problem is to solve the 2 sum closest problem for a particular i: Given a target value, find a pair of numbers who's sum is closer to the target value. Additionally, I'll share my LeetCode solution link for further reference. . In this post, we are going to solve the 16. The time complexity is O(n2) O (n 2), and the space complexity is O(log n) O (log n). Q2) Given a centre of a circle and it’s radius find the number of points in this circle when given a square (it’s top left and bottom right coordinates are given). leetcode. Three Sum Closest (LeetCode 16) | Full Solution with visual explanation | Interview Essential Nikhil Lohia 72. Find two integers in nums such that the sum is closest to target. You can assume that there is just one solution. If two pairs are equally close to target then pick the one where the elements are farther apart (i. Problem Statement Given an array of n integers and an integer , find three integers in such that the sum is closest to . Return the minimum possible value of Two Sum - Given an array of integers nums and an integer target, return indices of the two numbers such that they add up to target. We'll explore the intuition behind the solution, discuss the approach, analyze the complexity, and provide a detailed explanation of the code. Better than official and forum solutions. In this guide, we’ll use Python to dive deep into the hash table solution —the fastest and smartest way to solve this. 3Sum Closest. Problem Statement Given an integer Ex: arr: [1,2,3,1000] N:4 K:3 Answer: 2 Explanation: We place people at idx: [0,2,3] The closest distance is 2 houses. You may assume that each input would have exactly one solution, and you may not use the same element twice. Return the indices of the two numbers, index1 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. In this post, we will be discussing the Binary Search based approach. Given an array of integers nums and an integer target, return indices of the two numbers such that they add up to target. The result should also be sorted in ascending order. Nov 6, 2023 · Two Sum Leetcode | Comprehensive Guide & Solutions #2sumleetcode Widget Wisdom 4. Return the sum of the three integers. That’s the core of LeetCode 1: Two Sum, an easy-level problem where you find two numbers in an array that sum to a given target and return their indices. Two Sum in Python, Java, C++ and more. Oct 9, 2025 · For each element, we search for its closest complement using binary search, updating the closest sum found so far. Return the sum of the three integers… Find Closest Number to Zero - Given an integer array nums of size n, return the number with the value closest to 0 in nums. This is much faster than a naive nested loop approach. Two Sum Description Given an array of integers, return indices of the two numbers such that they add up to a specific target. Two Sum – Leetcode Solution – Leetcode Solution. Oct 22, 2017 · The core of the problem is to solve the 2 sum closest problem for a particular i: Given a target value, find a pair of numbers who's sum is closer to the target value. Return the difference between the sum of the two integers and the target. This problem 16. Let’s see the code, 1. 3Sum Closest is a Leetcode medium level problem.

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2 Sum Closest Leetcode. Aug 13, 2025 · To know more about the implementation pleas