From fb779ef3c64b5bc1d3e0e3ff00e83883e2fcbfc5 Mon Sep 17 00:00:00 2001
From: njiddasalifu <njiddasalifu@gmail.com>
Date: Sat, 8 Apr 2023 06:33:33 +0100
Subject: [PATCH] factorial of negative number does not exist, factorial of 0
 and 1 is 1

---
 src/algorithms/math/factorial/factorialRecursive.js | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/algorithms/math/factorial/factorialRecursive.js b/src/algorithms/math/factorial/factorialRecursive.js
index e2b4aec6..945fadfe 100644
--- a/src/algorithms/math/factorial/factorialRecursive.js
+++ b/src/algorithms/math/factorial/factorialRecursive.js
@@ -3,5 +3,13 @@
  * @return {number}
  */
 export default function factorialRecursive(number) {
-  return number > 1 ? number * factorialRecursive(number - 1) : 1;
-}
+  if(number<0){
+    throw new error("factorial of a negative number does not exits.");
+  } else if(number == 0 || 1){
+    return 1;
+  }else{
+    return number * factorialRecursive(number - 1);
+  }
+
+ }
+