Move the (num > 0) if condition to the end

Author: Eji4h

Maths/Factorial.js

@@ -18,11 +18,6 @@ const calcRange = (num) => {
 }
 
 const calcFactorial = (num) => {
-  if (num > 0) {
-    const range = calcRange(num)
-    const factorial = range.reduce((a, c) => a * c, 1)
-    return `The factorial of ${num} is ${factorial}`
-  }
   if (num === 0) {
     return 'The factorial of 0 is 1.'
   }
@@ -32,6 +27,11 @@ const calcFactorial = (num) => {
   if (!num) {
     return 'Sorry, factorial does not exist for null or undefined numbers.'
   }
+  if (num > 0) {
+    const range = calcRange(num)
+    const factorial = range.reduce((a, c) => a * c, 1)
+    return `The factorial of ${num} is ${factorial}`
+  }
 }
 
 export { calcFactorial }