function rotateLeft(d, arr) {
    // Write your code here
    let rotateArr=new Array(arr.length).fill(null);
    //The start index is from where elements are aligned with arr
    let i=(arr.length - (d % arr.length));
    let j=0;
    while(i <= arr.length - 1) {
        rotateArr[i]=arr[j];
        j++;
        i++;
    }
     i=0;
		 // the end point is where the alignment begins
    while(i<(arr.length - (d % arr.length))) {
          rotateArr[i]=arr[j];
          j++;
          i++;
         
    }
    return rotateArr;
}