add 1025

Author: everthis

1025-divisor-game.js

@@ -0,0 +1,21 @@
+/**
+ *  * @param {number} N
+ *   * @return {boolean}
+ *    */
+const divisorGame = function(N) {
+   let idx = 0  
+   let x
+   while(x = chk(N)) {
+     idx++
+     N = N - x
+   }
+   if(idx === 0) return false
+   return idx % 2 === 1 ? true : false
+};
+
+function chk(num) {
+   for(let i = 1; i < num; i++) {
+      if(num % i === 0) return i
+   }
+   return false
+}