defmodule LinearSearch do
 
  def search(list, target) do
    search_with_index(list, target, 0)
  end
 
  defp search_with_index([], _target, _index), do: nil
 
  defp search_with_index([head | tail], target, index) do
    if head == target do
      index
    else
      search_with_index(tail, target, index + 1)
    end
  end
end
 
# Пример использования
arr = [12, 1456, 53, 12451, 992, 81, 666]
target = 992
 
case LinearSearch.search(arr, target) do
  nil ->
    IO.puts("The #{target} element was not found")
 
  index ->
    IO.puts("The #{target} element was found at position #{index}")
end

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