Updated function

snippets/isArmstrongNumber.md

@@ -5,10 +5,9 @@ Checks if the given number is an armstrong number or not.
 Convert the given number into array of digits. Use `Math.pow()` to get the appropriate power for each digit and sum them up. If the sum is equal to the number itself, return `true` otherwise `false`.
 
 ```js
-const isArmstrongNumber = digits => {
-	let total = 0, arr = (digits+"").split("");
-	arr.map(d => total += Math.pow(parseInt(d), arr.length))
-	if(total === digits) return true; return false;
+const isArmstrongNumber = num => {
+	let arr = (num+"").split("");
+	return arr.reduce((a, d) => parseInt(a) + Math.pow(parseInt( d ), arr.length), 0) == num ? true : false
 }
 
 // isArmstrongNumber(1634) -> true