rotateArray

'use strict';

function rotateArray(arr) {
  let rotations = Number( arr.pop() );
  if ( isNaN(rotations) ) {
    console.log('Empty');
    return;
  }

  //Rotations
  for (let i = 0; i <= rotations - 1; i++) {
    let lastElement = arr[arr.length - 1];

    //Move all elements to the right
    for (let j = arr.length - 1; j >= 0; j--) {
      arr[j] = arr[j - 1];
    }
      arr[0] = lastElement;

  }
  console.log( arr.join(' ') );
}

rotateArray(['remove', 'remove', 'remove']);

[1, 2, 3, 4]

[4, 1, 2, 3]

[3, 4, 1, 2]