import math
from numpy import *

def compute_digits(a,b):
    num_digits = int(ceil(math.log(a+1,b)))
    d = zeros(num_digits)
    i = 0
    while a > 0:
        d[i] = a % b
        a = floor(a/b)
        i += 1
    return d

digits = compute_digits(1318,4)
print (digits)