Day 15 | Two Pointer Technique | LeetCode 2824 |Tamil | Challenge #leetcode #viralvideo #video

Day 15 of my 365 Days LeetCode Challenge 🚀
Today I solved LeetCode Problem 2824 – Count Pairs Whose Sum Is Less Than Target using the Two Pointer Technique.
In this problem, we need to count how many index pairs (i, j) exist such that:
i less than j
nums[i] + nums[j] less than target
Instead of using a brute force approach, I used the Two Pointer method after sorting the array, which helps reduce the time complexity significantly.
🔹 Why Two Pointer?
Efficient and clean logic
Reduces unnecessary comparisons
Best suited for sorted arrays
🔹 What you’ll learn from this video:
How Two Pointer works step-by-step
How to count pairs efficiently
Dry run with example
Optimized solution explanation in Tamil
Daily coding practice improves logic, confidence, and consistency 💪
Let’s keep learning and growing together 🚀

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Видео Day 15 | Two Pointer Technique | LeetCode 2824 |Tamil | Challenge #leetcode #viralvideo #video канала Abinaya