Daily JavaScript Challenge #JS-190: Rotate a Matrix 90 Degrees Clockwise

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Daily JavaScript Challenge: Rotate a Matrix 90 Degrees Clockwise

Hey fellow developers! 👋 Welcome to today's JavaScript coding challenge. Let's keep those programming skills sharp!

The Challenge

Difficulty: Medium

Topic: Array Manipulation

Description

Given an N x N matrix, write a function that rotates the matrix clockwise by 90 degrees in place.

Ready to Begin?

https://www.dpcdev.com/

Fork this challenge
Write your solution
Test it against the provided test cases
Share your approach in the comments below!

Want to Learn More?

Check out the documentation about this topic here: https://www.geeksforgeeks.org/inplace-rotate-square-matrix-by-90-degrees/

Join the Discussion!

How did you approach this problem?
Did you find any interesting edge cases?
What was your biggest learning from this challenge?

Let's learn together! Drop your thoughts and questions in the comments below. 👇

This is part of our Daily JavaScript Challenge series. Follow me for daily programming challenges and let's grow together! 🚀

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Top comments (2)

Asfia Aiman • Jun 2

function arrayManipulation(arrayInput = [])
{
const n = arrayInput.length;
const rotated = [];

for (let i = 0; i < n; i++) {
    rotated.push([]);
    for (let j = 0; j < n; j++) {
        rotated[i][j] = arrayInput[n - j - 1][i];
    }
}

console.log("Rotated 90° Clockwise:");
console.log(rotated);

}

Ansil Graves • May 30

Is rotating the matrix always supposed to be done in place, or could there be valid cases where creating a new matrix is a better approach?

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