<reponame>kvpb/libpy
def nbang(n):
  if n == 0:
    return 1
  return n * nbang( n - 1 ) # factorial definition: n! = n * ( n - 1 )!
# KVPB's RCSVFACT

#print(nbang(  0 ))
#print(nbang(  1 ))
#print(nbang(  2 ))
#print(nbang(  3 ))
#print(nbang( 20 ))
#   debug code

# Factorial.py
# Factorial number
#
# <NAME> `kvpb`
# +33 A BB BB BB BB
# local-part@domain
# https://www.linkedin.com/in/karlbertin

