Added Beautiful-Days problem solution

Author: ParrotStone

Beautiful Days/main.js

@@ -0,0 +1,16 @@
+#!/usr/bin/env node
+
+// Problem Description at -> https://www.hackerrank.com/challenges/beautiful-days-at-the-movies/problem
+
+
+function beautifulDays(i, j, k) {
+ let numOfBeautifulDays = 0;
+ for (let start = i; start <= j; start++) {
+ const reverse = Number(String(start).split('').reverse().join(''));
+ if ((start - reverse) % k == 0) numOfBeautifulDays++;
+ }
+
+ return numOfBeautifulDays;
+}
+
+console.log(beautifulDays(20, 23, 6)); // 2