import test2.TestUtility;
import java.io.PrintStream;
import java.util.ArrayList;

public class Test2D
{
   public static void main(String[] args)
   {
      PrintStream out = System.out;
      
      // get and print a random row of a sudoku puzzle
      final ArrayList<Integer> ROW = TestUtility.sudokuRow();
      out.println(ROW);
      
      // the number of elements in a row
      final int MAX = 9;
      
       /*
         If you started with InversionCount, then you need to add a variable
         that keeps track of the maximum number of repeats (maxRepeats).
         You also need a counter that counts the number of times that
         element i has been repeated.
      */
      
      // is this a valid sudoku row (i.e., no digits repeated)?
      boolean isValid = true;
      
      // the maximum number of times any digit is repeated
      int maxRepeats = 1;
      
      for (int i = 0; i < MAX; i++)
      {
         int elemi = ROW.get(i);
         
         // the number of times elemi is repeated
         int repeats = 1;
         for (int j = i + 1; j < MAX; j++)
         {
            int elemj = ROW.get(j);
            if (elemi == elemj)
            {
               isValid = false;
               repeats++;
            }
         }
         if (repeats > maxRepeats)
         {
            maxRepeats = repeats;
         }
      }
      out.println(isValid);
      if (!isValid)
      {
         out.println("Maximum repeats: " + maxRepeats);
      }
   }
}