Question

//   Given an array of size 9, with the values of 1-9, determine if the array
//   is valid or not.
//   Display a message stating the row is VALId, or state its INVALID and what
//   was the index number that determined the data invalid.
//
//   Use this java code as a start of your code.
//   Test the array data by changing the values.
//=============================================================================

import java.util.*;
  
public class Soduko_ValidateRow
   {
public static void main(String args[])
   {
       boolean isValid = true;
       int dataRow[] = { 9, 8, 7, 6, 5, 4, 3, 2, 8 };
       }
}

Answer 1

import java.util.*;

public class Soduko_ValidateRow {
        public static void main(String args[]) {
                boolean isValid = true;
                int dataRow[] = { 9, 8, 7, 6, 5, 4, 3, 2, 8 };
                int counter[] = new int[10];
                boolean flag = true;
                for (int i = 0; i < dataRow.length; i++) {
                        if (counter[dataRow[i]] == 0) {
                                counter[dataRow[i]]++;
                        } else {
                                System.out.println("INVALID: Data at index " + i + " is invalid");
                                flag = false;
                                break;
                        }
                        if (dataRow[i] > 9 || dataRow[i] < 1) {
                                System.out.println("INVALID: Data at index " + i + " is invalid");
                                flag = false;
                                break;
                        }
                }
                if(flag)
                        System.out.println("VALID");
        }
}

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