2016 Update

Task/Remove-duplicate-elements/JavaScript/remove-duplicate-elements-6.js

@@ -0,0 +1,39 @@
+(function () {
+    'use strict';
+
+    // nub :: [a] -> [a]
+    function nub(xs) {
+
+        // Eq :: a -> a -> Bool
+        function Eq(a, b) {
+            return a === b;
+        }
+
+        // nubBy :: (a -> a -> Bool) -> [a] -> [a]
+        function nubBy(fnEq, xs) {
+            var x = xs.length ? xs[0] : undefined;
+
+            return x !== undefined ? [x].concat(
+                nubBy(fnEq, xs.slice(1)
+                    .filter(function (y) {
+                        return !fnEq(x, y);
+                    }))
+            ) : [];
+        }
+
+        return nubBy(Eq, xs);
+    }
+
+
+    // TEST
+
+    return [
+        nub('4 3 2 8 0 1 9 5 1 7 6 3 9 9 4 2 1 5 3 2'.split(' '))
+        .map(function (x) {
+            return Number(x);
+        }),
+        nub('chthonic eleemosynary paronomasiac'.split(''))
+        .join('')
+    ]
+
+})();