pauloportella/rotateImage.js

## rotateImage.js
rotateImage = a => a.map((row, rowIndex) => a.map(val => val[rowIndex]).reverse())

## rotateImage.md

      
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              rotateImage.md
            
          
    Note: Try to solve this task in-place (with O(1) additional memory), since this is what you'll be asked to do during an interview.
You are given an n x n 2D matrix that represents an image. Rotate the image by 90 degrees (clockwise).
Example
For
a = [[1, 2, 3],
[4, 5, 6],
[7, 8, 9]]
the output should be
rotateImage(a) =
[[7, 4, 1],
[8, 5, 2],
[9, 6, 3]]
Input/Output
[execution time limit] 4 seconds (js)
[input] array.array.integer a
Guaranteed constraints:
1 ≤ a.length ≤ 100,
a[i].length = a.length,
1 ≤ a[i][j] ≤ 104.
[output] array.array.integer
[JavaScript (ES6)] Syntax Tips
// Prints help message to the console
// Returns a string
function helloWorld(name) {
console.log("This prints to the console when you Run Tests");
return "Hello, " + name;
}