Pentomino tiling: Difference between revisions

Content added Content deleted

Inline

@@ Line 66: / Line 66: @@
             for (int i = 0; i < 4; i++)
+            {
-                grid[rand.Next(nRows)][rand.Next(nCols)] = blank;
+                int randRow, randCol;
+                do
+                {
+                    randRow = rand.Next(nRows);
+                    randCol = rand.Next(nCols);
+                }
+                while (grid[randRow][randCol] == blank);
+                grid[randRow][randCol] = blank;
+            }
             if (Solve(0, 0))