Pen And Paper
Access this for finding everything at one place: https://penpaperpreparation.com/
Welcome to your one-stop destination for complete tech interview preparation!
This channel is dedicated to helping you crack top tech interviews with high-quality content on:
✅ DSA – All core topics covered with intuitive explanations
✅ LLD (Low-Level Design) – Real-world design patterns and system modeling
✅ HLD (High-Level Design) – Scalable system architecture for interviews
✅ Machine Coding Rounds – End-to-end coding round solutions and walkthroughs
✅ Leetcode Problem Solving – From easy to hard, explained with clarity
✅ Other Platform Questions – Codeforces, GFG, HackerRank, and more
Whether you’re a beginner or brushing up before a FAANG interview, this channel equips you with everything you need to succeed – from problem-solving strategies to system design skills.
🎯 Subscribe now and hit the 🔔 bell icon so you never miss an interview-winning video!
LeetCode 704 | Binary Search Made Easy 🔍 | Simplest Implementation
Binary Search Masterclass | Crack Google, Meta, Microsoft Interviews with This Core Concept
LeetCode 81 🔄 Search in Rotated Sorted Array II | Handle Duplicates + FAANG Interview!
LeetCode 33 🔁 Search in Rotated Sorted Array | Binary Search | FAANG Interview Prep
LeetCode 34 🔍 | Find First & Last Position In Sorted Array (Asked in Amazon, Meta)
Crack Any Tech Interview 2025 • Binary Search + Interviews at Google, Facebook, Microsoft & Startups
Recursion Masterclass Conclusion 🔁 | Final Recap + What’s Next? (FAANG Interview Prep)
Pattern 2: Binary Search on Answer 🔍 | Aggressive Cows Explained + FAANG Interview Code
Pattern 1: Classic Binary Search 🔍 | LeetCode 35 - Search Insert Position (Amazon, Apple, Microsoft)
2 Key Binary Search Patterns 🔍 | Solve Any BS Problem Like FAANG + Interview Flow
Binary Search Template 🔁 | Crack Any Interview Problem with This Thought Process!
Leetcode 51 | N‑Queens Backtracking 🧩 | FAANG Interview Guide
LeetCode 46 🔁 Permutations | Recursion Backtracking Explained — FAANG Prep
LeetCode 79 🔍 Word Search | Grid Backtracking Explained Step‑by‑Step — FAANG Prep
Leetcode 17 | Letter Combinations of a Phone Number | Recursion | Backtracking | Easy Explained
Leetcode 22 | Part 2 | Generate Parentheses | Multiple Approaches & Deep Dive
LeetCode 22 | Generate Parentheses | Recursion | Backtracking | Easy Explained
LeetCode 131 🔁 Palindrome Partitioning | Recursion + Backtracking Explained (FAANG Interview)
LeetCode 39 🔁 Combination Sum | Recursion + Backtracking Step‑by‑Step (Amazon, Google, Meta)
Recursion Pattern 3: How to Count Number of Solutions
Recursion Pattern 2: Check if Subsequence Exists with sum K
Recursion Pattern 1 | Find All Subsets Using Recursion
Recursion Problem Patterns 🌀 | Solve Any Recursive Problem for FAANGS
Fibonacci Series | Recursion | Step by Step Explanation
Must-Do Recursion Problem After Basics
Importance of Base Condition
Recursion Code Template
What is Recursion Stack ?
What is Recursion Tree ?
What Is Recursion ?