Two sum using two pointers java, Solved LeetCode Problem 15 – 3Sum Today, I solved LeetCode #15: 3Sum, a very popular and important problem based on sorting and two-pointer technique 馃殌 The task was to find all unique Intuition (Based on My Code): I used two pointers: • low → start of the window • high → end of the window As high moves forward: • I add the character to the HashMap • The map stores 馃殌 Day 10 of 100 Days of DSA 馃敟 Solved: 3Sum Closest | Two Pointer Approach | Java Today I solved the classic 3Sum Closest problem using an optimized approach. com Apr 4, 2025 路 In the two-pointer approach, pointers refer to an array’s indexes. Common patterns in the two-pointer approach involve: Two pointers each starting from the beginning and the end until they both meet One pointer moves at a slow pace while the other pointer moves at a faster pace Both of the above patterns can help Array Operations in Java – Traversal, Insertion, Deletion, Searching | DSA for Beginners [With Code] Data Structure and Algorithm Patterns for LeetCode Interviews – Tutorial L1. May 17, 2025 路 Given an array of integers nums and an integer target, return indices of the two numbers such that they add up to target. 1锔忊儯 Pascal’s Triangle LeetCode 118 https://lnkd. #2 Consistency of DSA 馃殌 Today’s DSA practice focused on array patterns & two-pointer logic. By using pointers, we can process two elements per loop, instead of just one. in/gbt8PAz6 Approach Build row by row First 馃殌 DSA Journey in Java – LeetCode 167 Solved! 馃殌 Continuing my DSA journey in Java through the Apna College DSA Course, today I solved an important two-pointer problem: 馃搶 LeetCode 167 . Apr 23, 2025 路 This method involves sorting the array and then using two pointers to identify a pair of numbers whose sum equals the target. 馃З Problem Statement: Given an Nth Node from the End: Finding the Nth node from the end of the list, often using two pointers separated by N nodes. Given a sorted array A (sorted in ascending order), having N integers, find if there exists any pair of elements (A [i], A [j]) such that their sum is equal to X. Remove Duplicates from a Sorted Linked List: Iterating through a sorted list and removing nodes with the same value as their predecessor. See full list on hellokoding. Jul 23, 2025 路 Two pointers is really an easy and effective technique which is typically used for searching pairs in a sorted array. You may assume that each input would have exactly one solution, and you may not use the same element twice. We then move the pointers based on the sum of the elements at these pointers. May 20, 2024 路 This approach works by initializing two pointers, one at the beginning (left) and one at the end (right) of the array.
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