This course teaches bit manipulation, a powerful technique to enhance algorithmic and problem-solving skills. It is a critical topic for those preparing for coding interviews for top tech companies, startups and industry leaders. Competitive programmers can take full advantage of this course by running most of the bit-related problems in O(1) complexity.

The course will begin by educating you about the number system and its representation, decimal and binary, followed by the six bitwise operators: AND, OR, NOT, XOR, and bit-shifting (left, right).

You will receive ample practical experience working through practice problems to improve your comprehension.

Upon completing this course, you will be able to solve problems with greater efficiency and speed.

Grokking Bit Manipulation for Coding Interviews

## Introduction

In this question, every element appears twice except one element, which is our answer.

Let's see how to achieve this using the **XOR** operator.

# Introduction

In this question, every element appears twice except one element, which is our answer.

Let's see how to achieve this using the **XOR** operator.

In this lesson, every element appears twice except one element. Try to come up with a process to solve this. Use your XOR skills to achieve this.

Getting Started

Number Systems, Bitwise, and Binary

Bitwise AND

Bitwise OR

Bitwise NOT

Bitwise XOR

Bit Shifting - Left, Right

Bitwise LeftShift Problems

Bitwise RightShift Problems

Final Thoughts

Challenge 1: Single Number

Introduction