hi there i am having some problem with the haskell question. if u can help me in that will really be appreciated. thanks for help. MY PROBLEM IS WITH THE SEPERATING THE SHAPES IN A GRID waiting for a sooner reply.THANKS here is the question: A rectangular grid is list of list of Char, where all inner lists are of the same length ie. type Grid = [[Char]] . Inside this grid, white space will be denoted by a '.' and filled pixels will be denoted by '*'. For example, a grid containing a square may look like square :: Grid square = ["............", "............", "...****.....", "...****.....", "...****.....", "...****.....", "............" ] The shapes can be anywhere inside the grid and they can can be of any size > 2 x 2 . That is, the only restriction on the size of the shape is a minimum of 2 x 2 area on the grid. And in cases of non-square, the shape will at least occupy 4 pixels. You can assume that no shape given will be smaller than this and that the shapes given will distinctly fall into one of the categories and will not be ambiguous. There is no restriction on the size of the grid itself, but obviously, it must fully contain the shape(s). There can be either one or two shape(s) inside a grid, but if there are two shapes in the grid, then they are guarenteed to be at least 1 pixel apart, and that they can be separated by cutting the grid either horizontally or vertically. twoTriangles :: Grid twoTriangles = ["....................", "....................", "...........*********", ".....*......*******.", "....***......*****..", "...*****......***...", "..*******......*....", "...................."] Shapes The following shapes are allowed inside a grid : RECTANGLE - The very same rectangle as we all know it. It will not be rotated. TRIANGLE - If it looks like a triangle, then it's a triangle. Note that this means the length of the three edges can be different, and it can be rotated in any way. (You'll notice that this is a very ambiguous definition of a triangle. Within the restraints of this specification, including that (1) all shapes given will be valid. (2) there are only three shapes to be identified. and (3) definition of the other shapes are unambiguous and rigid. You should think about how you can identify the triangle using the simplist way you can think of.) DIAMOND - Any thing that has a shape like [".............", ".............", ".............", ".....*.......", "....***......", "...*****.....", "..*******....", "...*****.....", "....***......", ".....*.......", "............."] To make this easy, a diamond will have horizontal symmetry as well as vertical symmetry. Tasks You are to write the following functions: areaOfOneShape:: Grid -> Int For the shape in the grid, you should count the number of pixels it occupies. (ie, count the number of '*' for each shape), and return the count. recogniseOneShape:: Grid -> String The input Grid will be as describe above, with only ONE shape in the grid, and the output String should be the name of the shapes, eg, "RECTANGLE" Note: You MUST capitalise the name of the shapes in the string you returned, and you MUST spell the name of the shapes correctly The ONLY names of the shapes allowed are the ones described above in the Shapes section PROBLEM: separateShapes :: Grid -> [Grid] The input Grid will contain either one or two shapes. You are to separate the shapes into separate Grids, where each contains a whole shape respectively; ie, if there are two shapes in the original Grid, then you should return two Grids containing a shape each. If there is only one shape in the orignal Grid, then you should just return a list containing a single Grid. The Grids returned must also be rectangular. areaOfShapes :: Grid -> [Int] You should return the area of the shapes. If there is only one shape, then the output will just be a list with one Int. If there are two shapes, then the output will be a list of two Int. The order of the integer returned does not matter. You should (but you don't have to) write this function using functions already defined above. recogniseShapes :: Grid -> [String] Give a Grid containing one or two shapes, return a list of String of the names of the shapes. If there are two shapes, then you can return the name of the two shapes in any order you like. Eg, If there is a triangle and a diamond in the grid, then you should return ["TRIANGLE", "DIAMOND"] (the order of the names does not matter). If there is just a single shape, then you just return a list with a single string, eg, ["RECTANGLE"]. You should (but you don't have to) write this function using functions already defined above. ____________________________________________________________ Do You Yahoo!? Get your free @yahoo.co.uk address at http://mail.yahoo.co.uk or your free @yahoo.ie address at http://mail.yahoo.ie