Initial data commit

Task/Sorting-algorithms-Shell-sort/Zkl/sorting-algorithms-shell-sort.zkl

@@ -0,0 +1,19 @@
+    // Shell sort a sequence of objects in place
+    // Requires mutiable list
+fcn shellSort(sequence){
+   n := sequence.len();
+   gap := n / 2;
+   while (0 < gap){
+      i := gap;
+      while (i < n){
+	 j := i - gap;
+	 while ((j >= 0) and (sequence[j] > sequence[j + gap])){
+	    sequence.swap(j,j + gap);
+	    j -= gap;
+	 }
+	 i += 1;
+      }
+      gap /= 2;
+   }
+   return(sequence);
+}