# ---------------------------------------------- 100 --------------------------------------------- #

# next number is x - 1 +3



function add_next_number(l::AbstractVector)::AbstractVector
  next_number = l[end] -1 +3
  new_l = deepcopy(l)
  push!(new_l, next_number)
  return new_l
end

function add_next_number_inplace(l::AbstractVector)
  next_number = l[end] -1 +3
  push!(l, next_number)
end


function main()
  # non-inplace version
  v = [1]
  n = 5
  for i in 1:n
    v = add_next_number(v)
  end
  println("not inplace $v")

  # inplace version
  v2 = [2]
  for i in 1:n
    add_next_number_inplace(v2)
  end
  println("inplace $v2")
end

main()