writeToArray() bugfix

Sorting/Sorter.java

@@ -58,8 +58,8 @@ abstract class Sorter {
      * @param index the index to be written to
      * @param value the value to write
      */
-    void writeToArray(int[] array, int index, int value){
-        array[index]==value;
+    void writeToArray(Integer[] array, int index, int value){
+        array[index]=value;
         writesUsed++;
     }