static void FindCellToStartFrom( int[,] arr, Position position )
{
position.X = 0;
position.Y = 0;
int arraySize = arr.GetLength(0);
for (int i = 0; i < arraySize; i++)
{
for (int j = 0; j < arraySize; j++)
{
if (arr[i, j] == 0)
{
position.X = i;
position.Y = j;
return;
}
}
}
}
static bool CalculateNextDirectionIfPossible( int[,] arr, Position position , DirectionVector currentDirection)
{
int nextX;
int nextY;
int arraySize = arr.GetLength(0);
for (int i = 0; i < DirectionVector.DirectionsCount; i++)
{
nextX = position.X + currentDirection.Dx;
nextY = position.Y + currentDirection.Dy;
if (IsInRange(arraySize, nextX, nextY) && arr[nextX, nextY] == 0)
{
return true;
}
currentDirection.Next();
}
return false;
}
public static int[,] CalculateMatrix(int arraySize)
{
int[,] matrix = new int[arraySize, arraySize];
int maxValue = arraySize * arraySize;
Position position = new Position();
DirectionVector direction = new DirectionVector();
for (int value = 1; value <= maxValue; value++)
{
matrix[position.X, position.Y] = value;
if (CalculateNextDirectionIfPossible(matrix, position, direction))
{
position.X += direction.Dx;
position.Y += direction.Dy;
}
else
{
FindCellToStartFrom(matrix, position);
direction.Reset();
}
}
return matrix;
}
public void TestInitialization()
{
Position position = new Position();
Assert.AreEqual(position.X == 0 && position.Y == 0, true, "Begin values not assigned correctly");
}