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trim.c
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#include <iostream>
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
using namespace std;
int board[1000][1000];
int no = 0;
int quadrant = 0;
void trominoTile
(int xBoard,
int yBoard,
int x_hole,
int y_hole,
int boardSize);
void
trominoTile (int xBoard, int yBoard, int x_hole, int y_hole, int boardSize)
{
int halfSize = boardSize / 2,
xCenter = 0,
yCenter = 0;
xCenter = xBoard + halfSize - 1;
yCenter = yBoard + halfSize - 1;
if (boardSize == 2)
{
if (board[xBoard][yBoard + 1] == 0
&&board[xBoard + 1][yBoard] == 0
&&board[xBoard + 1][yBoard + 1] == 0)
{
no++;
board[xBoard][yBoard + 1] = no;
board[xBoard + 1][yBoard] = no;
board[xBoard + 1][yBoard + 1] = no;
}
if (board[xBoard][yBoard] == 0
&&board[xBoard + 1][yBoard] == 0
&&board[xBoard + 1][yBoard + 1] == 0)
{
no++;
board[xBoard][yBoard] = no;
board[xBoard + 1][yBoard] = no;
board[xBoard + 1][yBoard + 1] = no;
}
if (board[xBoard][yBoard + 1] == 0
&&board[xBoard][yBoard] == 0
&&board[xBoard + 1][yBoard + 1] == 0)
{
no++;
board[xBoard + 1][yBoard + 1] = no;
board[xBoard][yBoard + 1] = no;
board[xBoard][yBoard] = no;
}
if (board[xBoard][yBoard + 1] == 0
&&board[xBoard + 1][yBoard] == 0
&&board[xBoard][yBoard] == 0)
{
no++;
board[xBoard][yBoard] = no;
board[xBoard][yBoard + 1] = no;
board[xBoard + 1][yBoard] = no;
}
return;
}
if (x_hole <= xCenter)
{
if (y_hole <= yCenter)
{
if (board[xCenter][yCenter + 1] == 0
&&board[xCenter + 1][yCenter] == 0
&&board[xCenter + 1][yCenter + 1] == 0)
{
no++;
board[xCenter][yCenter + 1] = no;
board[xCenter + 1][yCenter] = no;
board[xCenter + 1][yCenter + 1] = no;
quadrant = 1;
}
}
else
{
if (board[xCenter][yCenter] == 0
&&board[xCenter + 1][yCenter] == 0
&&board[xCenter + 1][yCenter + 1] == 0)
{
no++;
board[xCenter][yCenter] = no;
board[xCenter + 1][yCenter + 1] = no;
board[xCenter + 1][yCenter] = no;
quadrant = 2;
}
}
}
else
{
if (y_hole <= yCenter)
{
if (board[xCenter][yCenter + 1] == 0
&&board[xCenter][yCenter] == 0
&&board[xCenter + 1][yCenter + 1] == 0)
{
no++;
board[xCenter][yCenter] = no;
board[xCenter][yCenter + 1] = no;
board[xCenter + 1][yCenter + 1] = no;
quadrant = 3;
}
}
else
{
if (board[xCenter + 1][yCenter] == 0
&&board[xCenter][yCenter] == 0
&&board[xCenter][yCenter + 1] == 0)
{
no++;
board[xCenter][yCenter] = no;
board[xCenter][yCenter + 1] = no;
board[xCenter + 1][yCenter] = no;
quadrant = 4;
}
}
}
if (quadrant == 1)
{
trominoTile (xBoard, yBoard, x_hole, y_hole, halfSize);
trominoTile (xBoard, yCenter + 1, xCenter, yCenter + 1, halfSize);
trominoTile (xCenter + 1, yBoard, xCenter + 1, yCenter, halfSize);
trominoTile (xCenter + 1, yCenter + 1, xCenter + 1, yCenter + 1,
halfSize);
}
if (quadrant == 2)
{
trominoTile (xBoard, yBoard, xCenter, yCenter, halfSize);
trominoTile (xBoard, yCenter + 1, x_hole, y_hole, halfSize);
trominoTile (xCenter + 1, yBoard, xCenter + 1, yCenter, halfSize);
trominoTile (xCenter + 1, yCenter + 1, xCenter + 1, yCenter + 1,
halfSize);
}
if (quadrant == 3)
{
trominoTile (xBoard, yBoard, xCenter, yCenter, halfSize);
trominoTile (xBoard, yCenter + 1, xCenter, yCenter + 1, halfSize);
trominoTile (xCenter + 1, yBoard, x_hole, y_hole, halfSize);
trominoTile (xCenter + 1, yCenter + 1, xCenter + 1, yCenter + 1,
halfSize);
}
if (quadrant == 4)
{
trominoTile (xBoard, yBoard, xCenter, yCenter, halfSize);
trominoTile (xBoard, yCenter + 1, xCenter, yCenter + 1, halfSize);
trominoTile (xCenter + 1, yBoard, xCenter + 1, yCenter, halfSize);
trominoTile (xCenter + 1, yCenter + 1, x_hole, y_hole, halfSize);
}
}
int
main ()
{
int boardSize, x_hole, y_hole;
do
{
printf ("\n-------------------------------------");
printf ("\nEnter size of board (0 to quit): ");
scanf ("%d", &boardSize);
if (boardSize)
{
printf ("\nEnter coordinates of missing hole: ");
scanf ("%d%d", &x_hole, &y_hole);
for (int i = 1; i <= pow (2, boardSize); i++)
{
for (int j = 1; j <= pow (2, boardSize); j++)
{
board[i][j] = 0;
}
}
board[x_hole][y_hole] = -1;
trominoTile (1, 1, x_hole, y_hole, pow (2, boardSize));
for (int i = 1; i <= pow (2, boardSize); i++)
{
for (int j = 1; j <= pow (2, boardSize); j++)
{
if (i == x_hole && j == y_hole)
{
board[i][j] == -1;
printf ("%4s", "X");
}
else
{
printf ("%4d", board[i][j]);
}
}
cout << endl;
}
}
no = 0;
}
while (boardSize);
return EXIT_SUCCESS;
}