RosettaCodeData/Task/One-dimensional-cellular-automata/E/one-dimensional-cellular-automata-2.e

def rosettaRule := [
    "   " => " ",
    "  #" => " ",
    " # " => " ",
    " ##" => "#",
    "#  " => " ",
    "# #" => "#",
    "## " => "#",
    "###" => " ",
].get

? play("  ### ## # # # #  #   ", rosettaRule, 9, stdout)
0 |   ### ## # # # #  #
1 |   # ##### # # #
2 |    ##   ## # #
3 |    ##   ### #
4 |    ##   # ##
5 |    ##    ###
6 |    ##    # #
7 |    ##     #
8 |    ##
9 |    ##
# value: "   ##                 "