Number serie

hopa.rb

def split_num(arr)
    arr.split("").map {|c|
        c.to_i
    }
    .inject([]){|accumulator, value|
        # puts "[#{accumulator}, #{value}]"

        if accumulator.size > 0 and accumulator[-1][0] == value
            accumulator[-1][1] += 1
        else
            accumulator.push([value, 1])
        end

        accumulator
    }
    .map {|value|
        "#{value[1]}#{value[0]}"
    }
    .join("")
end

def loop (steps, init)
    steps.times.inject([init]) {|c, r|
        c.push(split_num(c[-1]))
    }
end

puts loop(10, "1")