Even load distribution function, how to implement in Elixir?

Questions & Help Questions
2

Hello,
here is my rewriting your pseudo code

number_nodes = 3
weighted_tasks = [10, 10, 10, 7, 6, 5, 5, 2, 2, 1, 1, 1]
node_capacity = trunc(Enum.sum(weighted_tasks) / number_nodes)

1..number_nodes
|> Enum.map(fn index -> {index, %{capacity: node_capacity, tasks: []}} end)
|> Enum.map_reduce(
  weighted_tasks,
  fn {node_index, node}, tasks ->
    {node, tasks} =
      Enum.reduce(tasks, {node, []}, fn task, {node, new_tasks} ->
        if task <= node.capacity do
          {%{capacity: node.capacity - task, tasks: [task | node.tasks]}, new_tasks}
        else
          {node, [task | new_tasks]}
        end
      end)

    {{node_index, node}, Enum.reverse(tasks)}
  end
)
|> IO.inspect(charlists: :as_lists)
# output:
{[
   {1, %{capacity: 0, tasks: [10, 10]}},
   {2, %{capacity: 0, tasks: [1, 2, 7, 10]}},
   {3, %{capacity: 0, tasks: [1, 1, 2, 5, 5, 6]}}
 ], []}