Top Interview 150: Solving 3Sum With Sorting And Two-Pointer Technique
The 3Sum problem is a classic interview challenge that combines sorting, two-pointer techniques, and efficient duplicate handling to find all unique triplets in an integer array that sum up to zero.
Top Interview 150 The 3Sum problem is a classic interview challenge that combines sorting, two-pointer techniques, and efficient duplicate handling. Let’s break it down and solve it step-by-step. 📝 Problem Overview: You’re given an integer array nums and need to find all unique triplets [nums[i], nums[j], nums[k]] such that: where 𝑖 ≠ 𝑗 ≠ 𝑘 Important Notes: The output must not contain duplicate triplets. The order of triplets and elements within triplets doesn’t matter. 🌟 Key Concepts: Sorting: Sorting the array simplifies duplicate handling and enables the two-pointe...