clean up

Sorting/NumberQuickSorterThreeWay.java

@@ -9,11 +9,8 @@ public class NumberQuickSorterThreeWay extends NumberQuickSorter{
     public NumberQuickSorterThreeWay(RandomNumberFileReader reader){
         super("quick sort (3-way partition)", reader);
     }
-    /*
-    void sort(){
-        quickSort(0,numbers.length-1);
-    }*/
-
+    
+    @Override
     void quickSort(int lowIndex, int highIndex){
         if(compare(lowIndex,highIndex)<0){
             int pivot=numbers[highIndex];