Master Bit Manipulation For Coding Interviews

Course Overview

In this course, you will learn how to solve problems using bit manipulation, a powerful technique that can be used to optimize your algorithmic and problem-solving skills.

This is one of the most important/critical topics when someone starts preparing for coding interviews for FAANG companies.

To kick things off, you’ll start by learning about the number system and how it’s represented. Then you’ll learn about the six bitwise operators: AND, OR, NOT, XOR, and bit shifting. Throughout, you will get tons of hands-on experience working through practice problems to help sharpen your understanding. By completing this course, you can solve problems faster and more efficiently.

What do you get?

• 44 lessons were categorized based on topics.
• 28 challenges.
• 27+ Illustrations and sketches
• 271 solutions provided.
• Solutions are written in Java, Python, JavaScript, C++, and TypeScript.
• GitHub repository access(Java, JavaScript)

Takeaway Skills

1. Master problem-solving that involves bit manipulation.
2. Master the bit manipulation allows you to organize all inputs in binary representation at the memory levels.
3. Master how the bit-level operations are computed. Understand that bit-level operations are based on all the arithmetic operations built into all languages.
4. Solve problems that are commonly asked in coding interviews related to bit manipulation.
5. These bit tricks could help in competitive programming in running algorithms, mostly in O(1) time.

Est. Time: 5hrs to complete.

Course Contents

Getting Started

1. Introduction to Bit Manipulation (preview)
2. What is Bit Manipulation? (preview)

Number Systems, Bitwise, and Binary

3. Introduction to Number Systems (preview)
4. Decimal Number System (preview)
5. Binary Number System and Representation (preview)
6. What are Bitwise Operators? (preview)
7. Count the Number of Digits in an integer (preview)
8. Convert Decimal Numbers to Binary Numbers (preview)

Bitwise AND

9. Introduction to AND Operator
10. Bitwise And, Computations, and Examples
11. Challenge 1: Count Set Bits Or Number of 1 bit's (preview)
12. Solution Review: Count Set Bits Or Number of 1 bit's (preview)
13. Counting Bits II
14. Challenge 2: Check If a Given Number is Even/Odd
15. Solution Review: Check If a Given Number is Even/Odd
16. Challenge 3: Power of 2 (preview)
17. Solution Review: Power of 2 (preview)

Bitwise OR

18. Introduction to OR Operator
19. Bitwise OR, Computations, and Examples
20. Number Of Flips Required To Make a|b Equal to c

Bitwise NOT

21. Introduction to NOT Operator
22. Bitwise NOT, Computations, and Examples
23. Switch Sign of a Number

Bitwise XOR

24. Introduction to XOR
25. Bitwise XOR, Computations, and Examples
26. Swap Two Numbers
27. Find Odd Occurring Element
28. Detect If Two Integers Have Opposite Signs
29. Hamming Distance
30. Challenge 1: Single Number
31. Solution Review: Single Number
32. Challenge 2: Missing Number
33. Solution Review: Missing Number

Bit Shifting - Left, Right

34. Introduction to Bit Shifting
35. Left Shifts
36. Arithmetic and Logical Right Shifts

Bitwise Left Shift Problems

37. Find the Bit Length of a Number
38. Check If Kth Bit Is Set/Unset Using Left Shift
39. Subsets Or Powerset (preview)
40. Challenge 1: Get the First Set Bit Position Using the Left Shift
41. Solution Review: Get The First Set Bit Position Using the Left Shift

Bitwise Right Shift problems

42. Check If Kth Bit Is Set/Unset Using Right Shift
43. Challenge 1: Get the First Set Bit Position Using the Right Shift
44. Solution Review: Get the First Set Bit Position Using the Right Shift

Final Thoughts

This concludes the course on bit manipulation.

This course has taught you how to re-write arithmetic operators like +, -, /, * into left, right shift, and other bit-level operations.

I hope the learning you gained in this course will be useful in solving Leetcode, Hackerrank, HackerEarth, Codeforces, Codechef, and other online coding challenges. This will also help you with interviews at FAANG or other top tech companies.

I wish you good luck and hope this course makes a difference in your coding journey!

Note: In the upcoming edits, you will see the following items:

1. Solutions in Rust and Go.
2. A few medium and hard problems were asked in recent FAANG and fast-paced startup coding interviews.

Happy Coding 👨🏻‍💻 !!

If you have finished the course, I'm super happy for you 🥳, and it's been a pleasure to be part of your professional journey.

I'm working hard in my spare time to keep the site up and running and to update the site with the most requested features. So long as people are having fun, I want to keep the site going.

If you'd like to say thanks, I'd really appreciate a coffee :)