The ultimate guide to coding interviews. Developed by FAANG engineers. Boost problem-solving skills with number theory, dynamic programming, and graph theory. Get interview-ready in just a few hours.

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Whether you’re gearing up for online coding challenges, code-a-thons, or interviews, then this course is for you. With this course, you will solidify your problem-solving skills ensuring a swift sail through any problem. 


You will be tasked with solving some of the most frequently asked questions that are brought up in FAANG interviews. You will start with the concepts of Number Theory and Divide and Conquer, and gradually move towards more complex problems like dynamic programming and graph theory.


With each problem you solve, there will be insightful explanations and full implementation details to really hammer home the concepts. By the time you finish this course, you will have the confidence to solve any problem, no matter the difficulty.

Competitive Programming - Crack Your Coding Interview, C++

# Problem statement - 1
**Given a number `n`, calculate the value of ${2^n}$.**

## Solution: `Bit-masking`

We will use the concept of bits to solve this problem. All the data is stored in bits internally in a computer. 

Let us take **n = 3**. The bit value of **1** is **0001**. The result should be **8**, and its corresponding bit value is **1000**. So here, we can shift the bits of **1** by **n** times to the left. This can be done using the ****<<**** operator.

Let us now look at the implementation.

Learn the concept of bit-masking and solve two classic problems.

Overview

Number Theory

Number Theory

Divide and Conquer

Greedy Algorithms

Greedy Algorithms

Recursion and Backtracking

Recursion and Backtracking

Dynamic Programming

Graphs

Bonus Lessons

Introduction to Bit-masking

Problem statement - 1