def factorial(x):if x == 0:return 1else:return x * factorial(x - 1)
print factorial(6)

def factorial(x):result = 1i = 2while i <= x:result = result * ii = i + 1return result
print factorial(6)

def fact(x): #{result = i = 1;while (i <= x): #{result *= i;i += 1;#}return result;
#}
print(fact(6))

@tailcall
def fact(x, acc=1):if (x > 1): return (fact((x - 1), (acc * x)))else:       return acc
print(fact(

def Factorial(x):res = 1for i in xrange(2, x + 1):res *= ireturn res
print Factorial(6)

def fact(x):return x > 1 and x * fact(x - 1) or 1
print fact(6)

f = lambda x: x and x * f(x - 1) or 1
print f(6)

import operator as op
import functional as f
fact = lambda x: f.foldl(op.mul, 1, xrange(2, x + 1))
print fact(6)

import sys
@tailcall
def fact(x, acc=1):if x: return fact(x.__sub__(1), acc.__mul__(x))return acc
sys.stdout.write(str(fact(6)) + '\n')

import c_math
fact = c_math.fact
print fact(6)

import c_maths
fact = c_maths.fact
print fact(6)

def factorial(x):#-------------------------------------------------#--- Code snippet from The Math Vault ---#--- Calculate factorial (C) Arthur Smith 1999 ---#-------------------------------------------------result = str(1)i = 1 #Thanks Adamwhile i <= x:#result = result * i #It's faster to use *=#result = str(result * result + i)#result = int(result *= i) #??????result str(int(result) * i)#result = int(str(result) * i)i = i + 1return result
print factorial(6)

import os
def fact(x):os.system('factorial ' + str(x))
fact(6)

NULL = None
def CalculateAndPrintFactorialEx(dwNumber,hOutputDevice,lpLparam,lpWparam,lpsscSecurity,*dwReserved):if lpsscSecurity != NULL:return NULL #Not implementeddwResult = dwCounter = 1while dwCounter <= dwNumber:dwResult *= dwCounterdwCounter += 1hOutputDevice.write(str(dwResult))hOutputDevice.write('\n')return 1
import sys
CalculateAndPrintFactorialEx(6, sys.stdout, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL)

def new(cls, *args, **kwargs):return cls(*args, **kwargs)class Number(object):passclass IntegralNumber(int, Number):def toInt(self):return new (int, self)class InternalBase(object):def __init__(self, base):self.base = base.toInt()def getBase(self):return new (IntegralNumber, self.base)class MathematicsSystem(object):def __init__(self, ibase):Abstract@classmethoddef getInstance(cls, ibase):try:cls.__instanceexcept AttributeError:cls.__instance = new (cls, ibase)return cls.__instanceclass StandardMathematicsSystem(MathematicsSystem):def __init__(self, ibase):if ibase.getBase() != new (IntegralNumber, 2):raise NotImplementedErrorself.base = ibase.getBase()def calculateFactorial(self, target):result = new (IntegralNumber, 1)i = new (IntegralNumber, 2)while i <= target:result = result * ii = i + new (IntegralNumber, 1)return resultprint StandardMathematicsSystem.getInstance(new (InternalBase, new (IntegralNumber, 2))).calculateFactorial(new (IntegralNumber, 6))