For example, the factorial of 6 is 1*2*3*4*5*6 = 720. Factorial is not defined for negative numbers, and the factorial of zero is one, 0! = 1. Factorial of a Number using Loop # Python program to find the factorial of a number provided by the user. # change the value for a...
Writing a Simple Factorial Program Python 2Khan Academy
AI代码解释 deffactorial(n):result=nforiinrange(1,n):result*=ireturnresult number=int(input('请输入一个正整数:'))result=factorial(number)print('%d的阶乘是:%d'%(number,result)) 采用递归方式如下:
@tail_call_optimized deffactorial(n,acc=1):"calculate a factorial"ifn==0:returnaccreturnfactorial(n-1,n*acc)printfactorial(10000) 为了更清晰的展示开启尾递归优化前、后调用栈的变化和tail_call_optimized装饰器抛异常退出递归调用栈的作用, 我这里利用pudb调试工具做了动图 开启尾递归优化前的调用栈 开...
sum=0forninnumber: sum= sum + n *nreturnsum 四、计算阶乘 n! deffac(): num= int(input("请输入一个数字")) factorial= 1#查看数字是负数,0或正数ifnum <0 :print("抱歉,负数没有阶乘")elifnum ==0 :print("0的阶乘为1")else:foriinrange(1 , num +1): ...
logging.debug('Start of factorial(%s%%)' % (n)) total = 1 for i in range(n + 1): total *= i logging.debug('i is ' + str(i) + ', total is ' + str(total)) logging.debug('End of factorial(%s%%)' % (n)) return totalprint(factorial(5))logging.debug('End of program')...
Python for reading user input. Calculating a factorial A factorial is a number derived from the product of the number and all the integers below it. So, the factorial of 4 is 4 x 3 x 2 x 1 = 24. Creating a function in C++ to calculate a factorial requires verbose declarations, wherea...
def factorial(n): if n==1: return 1 else: return n*factorial(n-1) a = factorial(10) print(a) 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 递归的缺陷:简单的程序是递归的优点之一。但是递归调用会占用大量的系统堆栈,内存耗用多,在递归调用层次多时速度要比循环慢的多,所以在使用递归时要...
import logging logging.basicConfig(level=logging.DEBUG,format='%(asctime)s - %(levelname)s-%(message)s') logging.debug('Start of program') # 上面的代码直接复制到你的py文件里 def factorial(n): '''计算阶乘的函数''' result = n for i in range(1,n): result = result*i logging.debug(...
for i in range(1,num+1): factorial = factorial*i print("%d的阶乘为%d"%(num,factorial)) if __name__ == '__main__': fac() #方法二 def fac(): num = int(input("请输入一个数字:")) #查看数字是负数,0或者正数 if num<0: ...