added code to count number of writes used

Sorting/CountingSorter.java

@@ -21,11 +21,13 @@ public class CountingSorter extends Sorter{
             int[] countArray = new int[max-min+1];
             for(int e: numbers){
                 countArray[e-min]++;
+                wrtiesUsed++;
             }
             int index=0;
             for(int i=0;i<countArray.length;i++){
                 while(countArray[i]!=0){
                     numbers[index]=i+min;
+                    wrtiesUsed++;
                     index++;
                     countArray[i]--;
                 }