arrayRotation

function arrayRotation(arr, rotations) {
  //Number of rotations loop
  for (let i = 0; i < rotations; i++) {
    let firstElement = arr[0];

    //Move all elements to the left
    for (let j = 0; j < arr.length - 1; j++) {
      arr[j] = arr[j + 1];
    }
    //Set last element to the old first element
    arr[arr.length - 1] = firstElement;
  }

  //Stringify array
  let arrayString = '';
  for (let i = 0; i < arr.length; i++) {
    if (i == arr.length - 1) {
      arrayString += arr[i];
    } else {
      arrayString += arr[i] + ' ';
    }
  }

  //Output
  console.log(arrayString);
}

arrayRotation(
  [51, 47, 32, 61, 21], 2
);