Factorial in python

adrian-em · adrian-em · commit 503e79d9ca2a · 2014-06-11T20:37:34.000+02:00
diff --git a/Factorial/Python/README.md b/Factorial/Python/README.md
@@ -0,0 +1,13 @@
+### Factorial
+
+http://en.wikipedia.org/wiki/Factorial
+
+In mathematics, the factorial of a non-negative integer n, denoted by n!, is the product of all positive integers less than or equal to n. For example,
+
+The value of 0! is 1, according to the convention for an empty product.
+![Factorial of 5](http://upload.wikimedia.org/math/9/3/9/939c013423574cad70f33eaa7dd68f0c.png)
+
+Definition:
+![Factorial Definition](http://upload.wikimedia.org/math/a/9/1/a91da51a80ac8291d8dbcc4cb77c0936.png)
+
+
diff --git a/Factorial/Python/factorial.py b/Factorial/Python/factorial.py
@@ -0,0 +1,3 @@
+def factorial_recursive(num):
+    """returns the factorial of num using a recursive method."""
+    return 1 if num == 0 else num * factorial_recursive(num -  1)
diff --git a/Factorial/Python/factorial_test.py b/Factorial/Python/factorial_test.py
@@ -0,0 +1,5 @@
+import factorial
+
+print factorial.factorial_recursive(0)
+print factorial.factorial_recursive(1)
+print factorial.factorial_recursive(5)

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,3 @@`
	`1`	`+def factorial_recursive(num):`
	`2`	`+ """returns the factorial of num using a recursive method."""`
	`3`	`+ return 1 if num == 0 else num * factorial_recursive(num - 1)`