Javascript Program to Split the array and add the first part to the end | Set 2

<script>
// Javascript program to Split the array and
// add the first part to the end

/* Function to reverse arr[] from index start to end*/
function rvereseArray(arr, start, end)
{
    while (start < end)
    {
        let temp = arr[start];
        arr[start] = arr[end];
        arr[end] = temp;
        start++;
        end--;
    }
}

// Function to print an array
function printArray(arr, size)
{
    for (let i = 0; i < size; i++)
        document.write(arr[i] + " ");
}

/* Function to left rotate arr[] of size n by k */
function splitArr(arr, k, n)
{
    rvereseArray(arr, 0, n - 1);
    rvereseArray(arr, 0, n - k - 1);
    rvereseArray(arr, n - k, n - 1);
}

/* Driver program to test above functions */
let arr = new Array( 12, 10, 5, 6, 52, 36 );
let n = arr.length;
let k = 2;

// Function calling
splitArr(arr, k, n);
printArray(arr, n);

// This code is contributed
// by _saurabh_jaiswal
</script>