Pen And Paper - Invidious

Pen And Paper

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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!

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5:54

LeetCode 300 | Longest Increasing Subsequence | Tabular | DP | MAANG Preparation

Pen And Paper

Shared 4 weeks ago

19 views

13:18

LeetCode 300 | Longest Increasing Subsequence | Memoization | DP | MAANG Preparation

Pen And Paper

Shared 4 weeks ago

39 views

6:27

LeetCode 198 | House Robber | Dynamic Programming | Most Optimal | MAANG Preparation

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Shared 4 weeks ago

26 views

6:49

LeetCode 198 | House Robber | Dynamic Programming | Tabulation | MAANG Preparation

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Shared 4 weeks ago

32 views

10:45

LeetCode 198 | House Robber | Dynamic Programming | Memoization | MAANG Preparation

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Shared 4 weeks ago

19 views

9:33

Subset Sum Problem Explained | DP | Most Optimal Solution | GFG | Easiest Explanation | MAANG Prep

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Shared 4 weeks ago

7 views

12:51

Subset Sum Problem Explained | DP | Memoization | GFG | Easiest Explanation | MAANG Prep

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Shared 4 weeks ago

42 views

12:48

LeetCode 70 | Climbing Stairs | DP | Explained Simply | Top-Down & Bottom-Up | MAANG Prep

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Shared 4 weeks ago

43 views

14:33

Fibonacci Number | Dynamic Programming | Intuition |Memoization, Tabulation | Must DO | MAANG Prep

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Shared 4 weeks ago

50 views

15:29

All About Dynamic Programming in One Video | DP Concepts, Types & Interview Strategy

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Shared 4 weeks ago

50 views

5:06

Dynamic Programming Introduction | Complete DP Roadmap for MAANG Interviews

Pen And Paper

Shared 1 month ago

162 views

16:34

Bit Manipulation Masterclass in ONE Video | Crack Any MAANG Bit Question FAST

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Shared 3 months ago

242 views

8:17

Leetcode 78 | Subsets | Bit Manipulation | Recursion | MAANG Interview Preparation | Pen And Paper

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Shared 3 months ago

54 views

9:05

LeetCode 1915 | Number of Wonderful Substrings| MAANG Interview | Optimal Solution | BIT Mask |

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Shared 3 months ago

55 views

12:09

LeetCode 154 | Longest Awesome Substring | Best Bitmask Trick Explained Simply | MAANG Preparation

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Shared 3 months ago

43 views

17:13

LeetCode 137 | Longest Substring with Vowels in Even Count | Bitmask + Basic | MANG Interview Prep

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Shared 3 months ago

56 views

12:00

Leetcode 1318 | Minimum Flips | MAANG Preparation | Beats 100% | By Pen And Paper

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Shared 3 months ago

38 views

9:46

LeetCode 371 | Sum of Two Integer | No +/- Operator | MANG Interview Prep | Easiest Explanation

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Shared 3 months ago

21 views

15:41

LeetCode 29 | Divide Two Integers | Simple Explanation | Beats 100% | Pen And Paper | MAANG Prep

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Shared 3 months ago

48 views

10:50

LeetCode 260 | Single Number III | Bit Manipulation Magic 🔥 MAANG Interview Question (Beats 100%)

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Shared 3 months ago

49 views

7:54

LeetCode 137 | Single Number II | The Bit Trick Everyone Struggles With (Beats 100%)

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Shared 3 months ago

121 views

7:30

LeetCode 1310 | XOR Queries of a Subarray | Beats 100% | Full Explanation + Code

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Shared 3 months ago

14 views

7:19

LeetCode 762 - Prime Set Bits (Easy) | Bit Manipulation Trick You NEED to Know! 🔥

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Shared 3 months ago

91 views

5:37

LeetCode 1720 | Decode XORed Array | Bit Manipulation & Array Reconstruction Explained | Pen & Paper

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Shared 3 months ago

116 views

4:41

LeetCode 268 | Missing Number | O(1) Space & O(n) Time Solution Explained | Pen & Paper

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Shared 4 months ago

26 views

5:40

Swap Two Numbers without a Temporary Variable | Explained Step-by-Step | Pen & Paper

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Shared 4 months ago

21 views

5:57

LeetCode 338 | Counting Bits | Easy Bit Manipulation & DP Explained Step-by-Step | Pen & Paper

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Shared 4 months ago

30 views

7:45

Smallest Power of 2 ≥ N (GeeksforGeeks) | Bit-Tricks Explained Step-by-Step | Pen & Paper

Pen And Paper

Shared 4 months ago

32 views

7:53

LeetCode 231| Power of Two | Easy Bit Manipulation Explained Step-by-Step | Pen & Paper

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Shared 4 months ago

28 views

4:30

Check K-th Bit (Kth Bit) | Step-by-Step Solution & Interview Tips | Pen & Paper

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Shared 4 months ago

33 views

8:08

LeetCode 190 | Reverse Bits | Bit Manipulation | Fast & Interview-Proven Solution | Pen & Paper

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Shared 4 months ago

25 views

5:11

LeetCode 461 | Hamming Distance | Bit Manipulation | MAANG Preparation | Pen and Paper

Pen And Paper

Shared 4 months ago

137 views

3:39

LeetCode 136 | Single Number | Bit Manipulation | Basic Preparation | Pen and Paper

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Shared 4 months ago

24 views

3:14

Odd or Even Using Bit Manipulation | MAANG Preparation | Pen and Paper

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Shared 4 months ago

28 views

10:34

LeetCode 476 | Number Complement Explained | Bit Manipulation for MAANG Preparation | Pen and Paper

Pen And Paper

Shared 4 months ago

29 views

12:22

Set the Rightmost Unset Bit | Bit Basics | MAANG Interview Prep | Pen And Paper

Pen And Paper

Shared 4 months ago

37 views

5:14

Master Kth Bit | Check Bits Explained with Examples | MAANG Prep | Pen And Paper

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Shared 4 months ago

44 views

9:59

Master Bitwise Operations in 10 Minutes | AND, OR, XOR, NOT, Shift Explained Simply | MAANG Prep

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Shared 5 months ago

37 views

18:00

Bit Fundamentals | Bit, Byte, Signed, Unsigned, ASCII & Bitwise Operations | MAANG Prep

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Shared 5 months ago

73 views

4:08

Bit Manipulation for MAANG Interviews — Easy & Intuitive Intro (Bitmask, XOR, LeetCode Prep)

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Shared 5 months ago

49 views

5:49

LeetCode 2563 | Count Fair Pairs | Divide & Conquer | O(nlogn) | Optimal | MAANG Prep

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Shared 5 months ago

31 views

5:58

Count Pairs with Sum Less Than Target | GFG | Sorting | Two Pointer | Pen and Paper | MAANG Prep

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Shared 5 months ago

16 views

23:24

LeetCode 2563 | Count Fair Pairs | Divide & Conquer | O(n(logn)^2) solution | MAANG Prep

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Shared 5 months ago

31 views

12:43

LeetCode 493 | Reverse Pairs | Explained with Merge Sort | MAANG Prep | Pen Paper Preparation

Pen And Paper

Shared 5 months ago

276 views

11:02

Count Inversion Problem | Most Asked Divide & Conquer Question | Pen and Paper | GFG + MAANG Prep

Pen And Paper

Shared 5 months ago

45 views

11:29

LeetCode 912 | Sort an Array | Divide and Conquer Explained | Merge Sort | MAANG Preparation

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Shared 5 months ago

38 views

3:22

Divide and Conquer Algorithm Explained | Paradigm, Examples & Patterns for Coding Interviews

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Shared 5 months ago

28 views

3:45

LeetCode 2406 | Divide Intervals Into Minimum Number of Groups | MAANG Interview Prep |Pen and Paper

Pen And Paper

Shared 5 months ago

85 views

10:43

Maximum Overlapping Intervals Problem | GeeksforGeeks | MAANG Interview Preparation (Pen and Paper)

Pen And Paper

Shared 5 months ago

200 views

7:27

LeetCode 2580 | Count Ways to Group Overlapping Ranges | Easy Explanation | Pen & Paper | MAANG Prep

Pen And Paper

Shared 5 months ago

20 views

6:12

LeetCode 452 | Minimum Number of Arrows to Burst Balloons | Greedy | Pen & Paper MAANG Prep

Pen And Paper

Shared 5 months ago

65 views

12:22

Meeting Rooms II | Minimum Conference Rooms Required | Pen & Paper MAANG Interview Prep

Pen And Paper

Shared 5 months ago

93 views

5:47

LeetCode 3169 | Count Days Without Meetings | Interval Merging + Sorting | Pen & Paper MAANG Prep

Pen And Paper

Shared 5 months ago

51 views

5:50

Activity Selection Problem | Greedy Algorithm Explained | Pen & Paper MAANG Prep

Pen And Paper

Shared 5 months ago

80 views

11:37

LeetCode 986 | Interval List Intersections | Two Pointers Explained | Pen & Paper MAANG Prep

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Shared 5 months ago

30 views

7:33

LeetCode 435 | Non-overlapping Intervals | Greedy + Sorting Solution | MAANG Interview Prep

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Shared 5 months ago

38 views

2:51

Meeting Rooms | Rooms Needed | Greedy & Priority Queue Solution | MAANG Interview Prep

Pen And Paper

Shared 5 months ago

32 views

9:00

LeetCode 57 | Insert Interval | Ultimate Explanation + Code | MAANG Preparation

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Shared 5 months ago

51 views

7:08

LeetCode 495 | Teemo Attacking | Ultimate Explanation + Code | MAANG Preparation

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Shared 5 months ago

117 views

9:19

LeetCode 56 | Merge Intervals | Ultimate Explanation + Code | MAANG Preparation

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Shared 5 months ago

45 views