Python includes exercises 26
Title: recursive method request 5 !.
Program analysis: recursive formula: fn = fn_1 * 4!
Source Code:
#!/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))
The above example output is:
0! = 1 1! = 1 2! = 2 3! = 6 4! = 24