September 2017 Update

Task/Sort-disjoint-sublist/JavaScript/sort-disjoint-sublist-3.js

@@ -0,0 +1,23 @@
+(() => {
+    'use strict';
+
+    // disjointSort :: [a] -> [Int] -> [a]
+    const disjointSort = (xs, indices) => {
+
+        // Sequence of indices discarded
+        const indicesSorted = indices.sort(),
+            subsetSorted = indicesSorted
+            .map(i => xs[i])
+            .sort();
+
+        return xs
+            .map((x, i) => {
+                const iIndex = indicesSorted.indexOf(i);
+                return iIndex !== -1 ? (
+                    subsetSorted[iIndex]
+                ) : x;
+            });
+    };
+
+    return disjointSort([7, 6, 5, 4, 3, 2, 1, 0], [6, 1, 7]);
+})();