Create factorial.py

annu12340 · web-flow · commit fa3641e97dcb · 2020-07-21T20:10:14.000+05:30
diff --git a/Algorithms/Maths/Factorial/python/factorial.py b/Algorithms/Maths/Factorial/python/factorial.py
@@ -0,0 +1,21 @@
+num = int(input("Enter a number: "))
+
+factorial = 1
+
+# check if the number is negative, positive or zero
+if num < 0:
+   print("Sorry, factorial does not exist for negative numbers")
+elif num == 0:
+   print("The factorial of 0 is 1")
+else:
+   for i in range(1,num + 1):
+       factorial = factorial*i
+   print("The factorial of",num,"is",factorial)
+   
+"""
+Or you can directly use the math.factorial() in python
+
+import math 
+num = int(input("Enter a number: "))
+print ("The factorial is ",math.factorial(num), end="") 
+"""
