JAVASCRIPT

rotate array

public static int[] Rotate(int[] arr , int k)
{
    k %= arr.Length;

    var ls = new int[arr.Length];

    for (int i = 0; i < ls.Length-k; i++)
    {
        ls[i+k] = arr[i];
    }
    var j = ls.Length-k;
    for (int i = 0; i < k; i++)
    {
        ls[i] = arr[j++];
    }

    return ls;
}

how to rotate an array in javascript

function arrayRotate(arr, reverse) {
  if (reverse) arr.unshift(arr.pop());
  else arr.push(arr.shift());
  return arr;
}

How to rotate a matrix in an array in javascript

function rotate(matrix) {
  return matrix[0].map((col, i) => matrix.map((row) => row[i]))
}

function rotateAntiClockwise(matrix) {
  return matrix[0].map((col, i) => matrix.map((row) => row[i]).reverse())
}