Ruby Robot 2

This challenge is similar to before, since the dirty tiles are along the walls (though they can be along any wall.)

However, you can't see the results, so make sure to program your robot in a general manner so it can clean the floor and return to the base to recharge and to complete the level.

Challenge Specifics

• The board is 5x5 excluding the walls.
• All the dirty tiles are located adjacent to the walls.
• The robot's full charge is 21 units of energy.
• You must beat the level within 50 turns.