Snippet for checking armstrong number

snippets/isArmstrongNumber.md

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+### isArmstrongNumber
+
+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;
+}
+
+// isArmstrongNumber(1634) -> true
+// isArmstrongNumber(371) -> true
+// isArmstrongNumber(56) -> false
+```