add radix

src/radix_sort_par3.cu

@@ -40,13 +40,13 @@ void countSort(int arr[], int n, int exp)
     // Change count[i] so that count[i] now contains actual 
     //  position of this digit in output[] 
     for (i = 1; i < 10; i++) 
-        count[i] += count[i - 1]; 
+        h_count[i] += h_count[i - 1]; 
   
     // Build the output array 
     for (i = n - 1; i >= 0; i--) 
     { 
-        output[count[ (arr[i]/exp)%10 ] - 1] = arr[i]; 
-        count[ (arr[i]/exp)%10 ]--; 
+        output[h_count[ (arr[i]/exp)%10 ] - 1] = arr[i]; 
+        h_count[ (arr[i]/exp)%10 ]--; 
     } 
   
     // Copy the output array to arr[], so that arr[] now