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    copied!<p>Looks like the snake game might work. Track a direction vector, and turn right 90 degrees every time you hit a side or a populated square. The tail keeps extending indefinitely :)</p> <p>Edit : Snakey v0.1 in C#. Works for non square grids too ;)</p> <pre><code>using System; using System.Text; namespace ConsoleApplication1 { class Program { public enum Direction { Up, Down, Left, Right } static void Main(string[] args) { int[,] maze; Direction currentDirection = Direction.Right; bool totallyStuck = false; bool complete = false; int currentX = 0; int currentY = 0; int boundX = 4; int boundY = 5; int currentNumber = 1; int stuckCounter = 0; bool placeNumber = true; maze = new int[boundY, boundX]; while ((!totallyStuck) &amp;&amp; (!complete)) { if (placeNumber) { maze[currentY, currentX] = currentNumber; currentNumber++; stuckCounter = 0; } switch (currentDirection) { case Direction.Right: // Noted short Circuit Bool Evan if ((currentX + 1 &lt; boundX) &amp;&amp; (maze[currentY, currentX + 1] == 0)) { placeNumber = true; currentX++; stuckCounter = 0; } else { placeNumber = false; stuckCounter++; } break; case Direction.Left: if ((currentX - 1 &gt;= 0) &amp;&amp; (maze[currentY, currentX - 1] == 0)) { placeNumber = true; currentX--; stuckCounter = 0; } else { placeNumber = false; stuckCounter++; } break; case Direction.Down: if ((currentY + 1 &lt; boundY) &amp;&amp; (maze[currentY + 1, currentX] == 0)) { placeNumber = true; currentY++; stuckCounter = 0; } else { placeNumber = false; stuckCounter++; } break; case Direction.Up: if ((currentY - 1 &gt;= 0) &amp;&amp; (maze[currentY - 1, currentX] == 0)) { placeNumber = true; currentY--; stuckCounter = 0; } else { placeNumber = false; stuckCounter++; } break; } // Is Snake stuck? If so, rotate 90 degs right if (stuckCounter == 1) { switch (currentDirection) { case Direction.Right: currentDirection = Direction.Down; break; case Direction.Down: currentDirection = Direction.Left; break; case Direction.Left: currentDirection = Direction.Up; break; case Direction.Up: currentDirection = Direction.Right; break; } } else if (stuckCounter &gt; 1) { totallyStuck = true; } } // Draw final maze for (int y = 0; y &lt; boundY; y++) { for (int x = 0; x &lt; boundX; x++) { Console.Write(string.Format("{0:00} ",maze[y, x])); } Console.Write("\r\n"); } } } } </code></pre>
 

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