Create factorial-functional.rb

tausifshahbaz · Oct 9, 2017 · 9dbeb7c · 9dbeb7c
1 parent b672bcc
commit 9dbeb7c
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/math/factorial/ruby/factorial-functional.rb b/math/factorial/ruby/factorial-functional.rb
@@ -0,0 +1,7 @@
+def fact(n)
+  (1..n).inject :*
+end
+
+puts "Enter number: "
+n = gets.to_i
+puts "#{n}! = #{fact(n)}"