DEV Community

DPC
DPC

Posted on

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

#javascript #devchallenge #programming #webdev

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/

  1. Fork this challenge
  2. Write your solution
  3. Test it against the provided test cases
  4. 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! 🚀

javascript #programming #coding #dailycodingchallenge #webdev

Top comments (2)

Collapse
 
asfiaaiman profile image
Asfia Aiman •

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);
Enter fullscreen mode Exit fullscreen mode

}

Collapse
 
ansilgraves profile image
Ansil Graves •

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?