private static string BrickRowToString(BrickRow row)
{
StringBuilder sb = new StringBuilder();
for (int idx = 1; idx <= row.RowCracks.Length - 1; idx++)
{
sb.Append(row.RowCracks[idx] ? "|" : ".");
}
return sb.ToString();
}
private static void BuildValidRows()
{
validBrickRowDefs = new List<string>();
validBrickRows = new List<BrickRow>();
int maxBricksWide = wallWidth / 2;
for (int layout = 0; layout <= (int)Math.Pow(2, maxBricksWide); layout++)
{
string brickRowDef = "";
bool[] brickRowCracks = new bool[wallWidth + 1];
string layoutString = MiscFunctions.ToBinary(layout, maxBricksWide);
char[] bricks = layoutString.ToCharArray();
int widthBricks = 0;
foreach (char brick in bricks)
{
widthBricks += (brick == '0' ? 2 : 3);
if (widthBricks > wallWidth)
break;
brickRowCracks[widthBricks] = true; // line here!!
brickRowDef += brick;
if (widthBricks == wallWidth)
{
if (!validBrickRowDefs.Contains(brickRowDef))
{
validBrickRowDefs.Add(brickRowDef);
BrickRow newRow = new BrickRow(brickRowDef, brickRowCracks);
validBrickRows.Add(newRow);
}
break;
}
}
}
Console.WriteLine("Number validRows: {0}", validBrickRows.Count);
}
private static bool IsValidStack(BrickRow upper, BrickRow lower)
{
if (upper.BrickRowDefinition==lower.BrickRowDefinition)
return false;
for (int idx = 2; idx < (wallWidth-1); idx++)
{
if (upper.RowCracks[idx] && lower.RowCracks[idx])
return false;
}
return true;
}
private static void DoStacks(int numRowsToAdd, BrickRow topRow)
{
for (int idx = 0; idx < topRow.PossibleValidRows.Count; idx++)
{
if (numRowsToAdd > 1)
{
DoStacks(numRowsToAdd - 1, topRow.PossibleValidRows[idx]);
}
else
{
numSolutions++;
}
}
}