This is how i did it; Java.

static int[] rotLeft(int[] a, int d) {
    int temp;
    for (int i = 0; i < d ; i++ ){
        temp = a[0];
        for (int j = 0; j < a.length-1 ; j++){
            a[j]=a[j+1];
        }
        a[a.length-1]=temp;
    }return a;
}