Initial data commit

Task/100-doors/JavaScript/100-doors-2.js

@@ -0,0 +1,58 @@
+(function (n) {
+    "use strict";
+    function finalDoors(n) {
+        var lstRange = range(1, n);
+        return lstRange
+            .reduce(function (a, _, k) {
+                var m = k + 1;
+                return a.map(function (x, i) {
+                    var j = i + 1;
+                    return [j, j % m ? x[1] : !x[1]];
+                });
+            }, zip(
+                lstRange,
+                replicate(n, false)
+            ));
+    };
+    function zip(xs, ys) {
+        return xs.length === ys.length ? (
+            xs.map(function (x, i) {
+                return [x, ys[i]];
+            })
+        ) : undefined;
+    }
+    function replicate(n, a) {
+        var v = [a],
+            o = [];
+        if (n < 1) return o;
+        while (n > 1) {
+            if (n & 1) o = o.concat(v);
+            n >>= 1;
+            v = v.concat(v);
+        }
+        return o.concat(v);
+    }
+    function range(m, n, delta) {
+        var d = delta || 1,
+            blnUp = n > m,
+            lng = Math.floor((blnUp ? n - m : m - n) / d) + 1,
+            a = Array(lng),
+            i = lng;
+        if (blnUp)
+            while (i--) a[i] = (d * i) + m;
+        else
+            while (i--) a[i] = m - (d * i);
+        return a;
+    }
+    return finalDoors(n)
+        .filter(function (tuple) {
+            return tuple[1];
+        })
+        .map(function (tuple) {
+            return {
+                door: tuple[0],
+                open: tuple[1]
+            };
+        });
+
+})(100);