rename to distinguish btw number and word sorters

Sorting/NumberCountingSorter.java

@@ -0,0 +1,40 @@
+package Sorting;
+
+import java.util.Arrays;
+
+public class NumberCountingSorter extends NumberSorter{
+
+    public NumberCountingSorter(RandomNumberFileReader reader){
+        super("counting sort", reader);
+    }
+
+    void sort(){
+        if(numbers.length!=0){
+            int min = numbers[0];
+            int max = numbers[0];
+            for(int e: numbers){
+                if(compare(e,min)<0){
+                    min=e;
+                }
+                if(compare(e,max)>0){
+                    max=e;
+                }
+            }
+            Integer[] countArray = new Integer[max-min+1];
+            Arrays.fill(countArray, Integer.valueOf(0));
+            for(int e: numbers){
+                writeToArray(countArray, e-min, countArray[e-min]+1);
+               
+            }
+            int index=0;
+            for(int i=0;i<countArray.length;i++){
+                while(countArray[i]!=0){
+                    writeToArray(numbers, index, i+min);
+                    index++;
+                    writeToArray(countArray, i, countArray[i]-1);
+                }
+            }
+        }
+    }
+    
+}