Start with a data type for the cell values, instead of Char. Then use an
Array of Arrays, containing those values.
data Cell = Empty | O | X
type Board = Array Int Cell
Finding winning "rows" and "columns" is easy. Diagonals are slightly more
complicated.
Peter
On 18 March 2013 15:54, Costello, Roger L.
Hi Folks,
Currently I am representing a tic-tac-toe board as a string, with 'X' denoting player 1 and 'O' denoting player 2. For example, I represent this 2x2 game board:
'X' | ----------------------- | 'O'
with this string: "X O"
The nice thing about that representation is that it is each to identify which cells are filled or empty, and it is easy to mark a cell with an 'X' or 'O'.
The problem with the representation is that it is difficult to determine when a player has won.
Can you recommend a representation that makes it easy to:
1. determine when a player has won 2. identify cells that are filled or empty 3. mark an empty cell
/Roger
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