How to rotate a two dimensional array in javascript?

README.md

O(n^2) time and O(1) space algorithm

Rotate by +90:

1. Transpose
2. Reverse each row

Rotate by -90:

Method 1 :

1. Transpose
2. Reverse each column

Method 2 :

1. Reverse each row
2. Transpose

Rotate by +180:

Method 1: Rotate by +90 twice

Method 2: Reverse each row and then reverse each column (Transpose)

Rotate by -180:

Method 1: Rotate by -90 twice

Method 2: Reverse each column and then reverse each row

Method 3: Rotate by +180 as they are same

array_rotate.js

let array = [[0, 1, 0], [1, 1, 1]];
function rotate(array) {
    return array[0].map((_, index) => array.map(row => row[index]).reverse());
}
let array90 = rotate(array);
let array180 = rotate(array90);
console.log(array);
console.log(array90);
console.log(array180);