ArmstrongNumRecursive.py

# ArmstrongNumRecursive.py by gauravssnl

def armstrong(num , sum=0 ,original = None):
    # store original num
    if original is None:
        original = num

    if original == sum : return True

    if num:
        digit = num%10
        sum += pow(digit,3)
        num = int(num/10)
        return armstrong(num,sum,original)

    return False

print(armstrong(0))
print(armstrong(1))
print(armstrong(153))
print(armstrong(370))
print(armstrong(371))
print(armstrong(407))