Two Pointers Made Simple | Day 3 of 30 Days LeetCode DSA Challenge #codingchallenge #30daysofcode

Welcome to Day 3 of the 30 Days DSA Challenge!
Every day, we solve one core DSA pattern LIVE using real LeetCode problems.

Today’s topic is Two Pointers, one of the most common and powerful patterns in coding interviews.
🔥 What We Will Cover Today
In this session, you will learn:
1️⃣ What is the Two Pointers Technique?
Left & Right pointer
Fast & Slow pointer
Inward shrinking pointers
Outward expanding pointers

2️⃣ When to Use Two Pointers?
Sorted arrays
Finding pairs or triplets
Removing duplicates
Checking palindromes
Linked list fast-slow tricks

3️⃣ Essential Patterns We’ll Solve

✔ Pair Sum / Two Sum (Sorted)
✔ Remove Duplicates from Sorted Array
✔ Move Zeroes
✔ Container With Most Water
✔ Palindrome Check
✔ Linked List Cycle detection (Floyd’s Algo)

4️⃣ How to Identify a Two Pointer Problem Instantly

If sorting helps
If you need O(n) time
If brute force uses nested loops
If shrinking/expanding windows are needed

5️⃣ Live LeetCode Examples + Step-by-Step Logic

We will solve common LeetCode patterns LIVE, explain the intuition, and derive optimal solutions.

👨‍💻 Who Should Watch?

This session is perfect if you:
Struggle to identify patterns in problems
Want to crack product-based interviews
Want strong DSA intuition
Are learning DSA from scratch
Want daily accountability and consistency

🧠 About the 30-Day Challenge

📅 30 days
📚 30 core DSA patterns
💻 LeetCode standard questions
🎯 Focus on intuition + implementation
🔥 Daily live coding

Join the challenge. Stay consistent. Level up your problem-solving skills 🚀

#twopointers #dsa #LeetCodeLive #codingchallenge #30daysofcode #interviewpreparation #programming #techlive #softwareengineering #competitiveprogramming #learntocode

Видео Two Pointers Made Simple | Day 3 of 30 Days LeetCode DSA Challenge #codingchallenge #30daysofcode канала Nitin Singh