Python 100例-26 Python 100例-25 Python 100例-27 实例26 题目: 利用递归方法求5!。 程序分析: 递归公式:fn=fn_1*4! 程序源代码: #!/usr/bin/python # -*- coding: UTF-8 -*- def fact(j): sum = 0 if j == 0: sum = 1 else: sum = j * fact(j - 1) return sum for i in range(5): print '%d! = %d' % (i,fact(i)) 以上实例输出结果为: 0! = 1 1! = 1 2! = 2 3! = 6 4! = 24 Python 100例-25 Python 100例-27