Exports variations with repetions

Author: mgechev

src/combinatorics/cartesianproduct.js

@@ -1,5 +1,6 @@
 (function (exports) {
   'use strict';
+
   var cartesianProduct = (function () {
     var result;
 

src/combinatorics/variations-repetion.js

@@ -1,24 +1,28 @@
-var variationsWithRepetion = (function () {
+(function (exports) {
   'use strict';
 
-  var res;
+  var variationsWithRepetion = (function () {
+    var res;
 
-  function variations(arr, k, index, current) {
-    if (k === index) {
-      return res.push(current.slice());
+    function variations(arr, k, index, current) {
+      if (k === index) {
+        return res.push(current.slice());
+      }
+      for (var i = 0; i < arr.length; i += 1) {
+        current[index] = arr[i];
+        variations(arr, k, index + 1, current);
+      }
     }
-    for (var i = 0; i < arr.length; i += 1) {
-      current[index] = arr[i];
-      variations(arr, k, index + 1, current);
-    }
-  }
 
-  return function (arr, k) {
-    res = [];
-    variations(arr, k, 0, []);
-    var temp = res;
-    res = undefined;
-    return temp;
-  };
-}());
+    return function (arr, k) {
+      res = [];
+      variations(arr, k, 0, []);
+      var temp = res;
+      res = undefined;
+      return temp;
+    };
+  }());
+
+  exports.variationsWithRepetion = variationsWithRepetion;
 
+}(typeof exports === 'undefined' ? window : exports));