From cd7111a015d5676b17d61214ea7a51b0bbc41829 Mon Sep 17 00:00:00 2001
From: Croustys <51267148+Croustys@users.noreply.github.com>
Date: Wed, 14 Oct 2020 04:02:26 +0200
Subject: [PATCH] Added tests & normal function convertion (#445)

* added factorial calculator recursively

* added tests and converted to normal function

* Added tests & normal function convertion

* Update factorialCalculator.js

updated code "design" not sure why test fails on such arbitrary things.

* Update and rename factorialCalculator.js to factorial.js

Co-authored-by: vinayak <itssvinayak@gmail.com>
---
 Recursive/factorial.js | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 Recursive/factorial.js

diff --git a/Recursive/factorial.js b/Recursive/factorial.js
new file mode 100644
index 000000000..0b1260c30
--- /dev/null
+++ b/Recursive/factorial.js
@@ -0,0 +1,16 @@
+// function to find factorial using recursion
+// example :
+//    5! = 1*2*3*4*5 = 120
+//    2! = 1*2 = 2
+
+const factorial = (n) => {
+  if (n === 0) {
+    return 1
+  }
+  return n * factorial(n - 1)
+}
+
+// testing
+console.log(factorial(4))
+console.log(factorial(15))
+console.log(factorial(0))