Initial data commit

Task/Remove-duplicate-elements/JavaScript/remove-duplicate-elements-1.js

@@ -0,0 +1,16 @@
+function unique(ary) {
+    // concat() with no args is a way to clone an array
+    var u = ary.concat().sort();
+    for (var i = 1; i < u.length; ) {
+        if (u[i-1] === u[i])
+            u.splice(i,1);
+        else
+            i++;
+    }
+    return u;
+}
+
+var ary = [1, 2, 3, "a", "b", "c", 2, 3, 4, "b", "c", "d", "4"];
+var uniq = unique(ary);
+for (var i = 0; i < uniq.length; i++)
+    print(uniq[i] + "\t" + typeof(uniq[i]));

Task/Remove-duplicate-elements/JavaScript/remove-duplicate-elements-2.js

@@ -0,0 +1,11 @@
+Array.prototype.unique = function() {
+    var u = this.concat().sort();
+    for (var i = 1; i < u.length; ) {
+        if (u[i-1] === u[i])
+            u.splice(i,1);
+        else
+            i++;
+    }
+    return u;
+}
+var uniq = [1, 2, 3, "a", "b", "c", 2, 3, 4, "b", "c", "d"].unique();

Task/Remove-duplicate-elements/JavaScript/remove-duplicate-elements-3.js

@@ -0,0 +1,3 @@
+Array.prototype.unique = function() {
+   return this.sort().reduce( (a,e) => e === a[a.length-1] ? a : (a.push(e), a), [] )
+}

Task/Remove-duplicate-elements/JavaScript/remove-duplicate-elements-4.js

@@ -0,0 +1,3 @@
+Array.prototype.unique = function() {
+    return [... new Set(this)]
+}

Task/Remove-duplicate-elements/JavaScript/remove-duplicate-elements-5.js

@@ -0,0 +1,15 @@
+function uniq(lst) {
+  var u = [],
+    dct = {},
+    i = lst.length,
+    v;
+
+  while (i--) {
+    v = lst[i], dct[v] || (
+      dct[v] = u.push(v)
+    );
+  }
+  u.sort(); // optional
+
+  return u;
+}

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('')
+    ]
+
+})();