2016 Update

Task/100-doors/JavaScript/100-doors-9.js

@@ -1,18 +1,9 @@
-(function () {
+Array.apply(null, { length: 100 })
+  .map((v, i) => i + 1)
+    .forEach(door => {
+      var sqrt = Math.sqrt(door);
 
-  return rng(1, 100).filter(
-    function (x) {
-      var root = Math.sqrt(x);
-
-      return root === Math.floor(root);
-    }
-  );
-
-  // rng(1, 20) --> [1..20]
-  function rng(m, n) {
-    return Array.apply(null, Array(n - m + 1)).map(function (x, i) {
-      return m + i;
+      if (sqrt === (sqrt | 0)) {
+        console.log("Door %d is open", door);
+      }
     });
-  }
-
-})();