Two Pointers

Minimum Cost to Merge Stones

3Sum LeetCode Solution | Easy Approach | C++, Java, Python

3Sum LeetCode | Given an integer array nums, return all the triplets¬†[nums[i], nums[j], nums[k]]¬†such that¬†i != j,¬†i != k, and¬†j != k, and¬†nums[i] + nums[j] + nums[k] == 0. Notice that the solution set must not contain duplicate triplets. Example 1: Input: nums = [-1,0,1,2,-1,-4] Output: [[-1,-1,2],[-1,0,1]] Example 2: Input: nums = [] Output: [] …

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Minimum Cost to Merge Stones

4Sum LeetCode Solution | C++, Java, Python | Easy Approach

4Sum | Given an array¬†nums¬†of¬†n¬†integers, return¬†an array of all the¬†unique¬†quadruplets¬†[nums[a], nums[b], nums[c], nums[d]]¬†such that: 0 <= a, b, c, d < n a, b, c, and d are distinct. nums[a] + nums[b] + nums[c] + nums[d] == target You may return the answer in any order. Example 1: Input: nums = [1,0,-1,0,-2,2], target = 0 Output: [[-2,-1,1,2],[-2,0,0,2],[-1,0,0,1]] Example 2: Input: nums = …

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Minimum Cost to Merge Stones

3Sum Closest LeetCode Solution | C++, Java, Python | Easy Approach

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. Return the sum of the three integers. You may assume that each input would have exactly one solution. Example 1: Input: nums = [-1,2,1,-4], target = 1 Output: 2 Explanation: The sum that is closest to …

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Minimum Cost to Merge Stones

Container With Most Water Leetcode Solution | Easy Approach

Container With Most Water | You are given an integer array height of length n. There are n vertical lines drawn such that the two endpoints of the ith line are (i, 0) and (i, height[i]). Find two lines that together with the x-axis form a container, such that the container contains the most water. Return the maximum amount of water a container can store. Notice that …

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