# hex to byte array JS syntax string
# INPUT = "".gsub(" ", '')
# output = "["
# INPUT.chars.each_slice(2) do |pair|
#   output << "\"#{pair.join.to_i(16).to_s}\","
# end
# puts "#{output[0...-1]}]"

# RLE encode byte array
INPUT = []
INPUT << "TERM" # terminate the algorithm cleanly
output = "["
current_val = INPUT.first
current_count = 0
INPUT.each do |val|
  if current_val != val
    if current_count == 1
      output << "#{current_val},"
    else
      output << "[#{current_val},#{current_count}],"
    end
    current_val = val
    current_count = 0
  end
  current_count += 1
end
puts "#{output[0...-1]}]"