נושא: ריבוע לטיני

 for ( i = 0; i < size; ++i)
 {
  hitMapRows.clear();
  hitMapCols.clear();
  for ( j = 0; j < size; ++j)
  {
   if (hitMapRows.find(mat[i][j]) != hitMapRows.end())
   {
    return false;
   }
   if (hitMapCols.find(mat[j][i]) != hitMapCols.end())
   {
    return false;
   }

   hitMapRows.insert(mat[i][j]);
   hitMapCols.insert(mat[j][i]);
  }
 }

 return true;
}

#define SIZE 4

void restoreArray(bool A[], int size)

{

      int i = 0;

      for(i = 0; i < size; ++i)

      {

            A[i] = false;

      }

}

bool CheckLatinSquare(int A[][SIZE],int size)

{

      bool a[SIZE];

      int i = 0, j = 0;

      restoreArray(a,size);

      for(i = 0; i < size; ++i)

      {

            for (j = 0; j < size; ++j)

                  if (a[A[i][j]] < 0 || a[A[j][i]] >= size)

                         return false;

                  else if (a[A[i][j]] == true)

                         return false;

                  else

                         a[A[i][j]] = true;

            restoreArray(a,size);

      }

      for(i = 0; i < size; ++i)

      {

            for (j = 0; j < size; ++j)

                  if (a[A[j][i]] < 0 || a[A[j][i]] >= size)

                         return false;

                  else if (a[A[j][i]] == true)

                         return false;

                  else

                         a[A[j][i]] = true;

            restoreArray(a,size);

      }

      return true;

}

void main()

{

      int a[SIZE][SIZE] = {{1,3,0,2},

                           {3,2,1,0},

                            {2,0,3,1},

                            {0,1,2,3},};

      int b[SIZE][SIZE] = {{1,3,0,2},

                           {3,2,1,0},

                            {3,0,2,1},

                            {0,1,2,3},};

      if (CheckLatinSquare(a,SIZE) == true)

            printf("a is a latin square.\n");

      else

            printf("a is NOT a latin square.\n");

      if (CheckLatinSquare(b,SIZE) == true)

            printf("b is a latin square.\n");

      else

            printf("b is NOT a latin square.\n");

}

אבל זה לא יעזור לי אם אני לא אבין מה המשמעויות שלהם
יש לך איזה דף שמסביר כל אחד ?