local function bubblesort(array)
    for getal = 1, #array do
    for i = 1, #array do
      print('i = '..tostring(i)..', array[i] = '..tostring(array[i]))
      print('i+1 = '..tostring(i+1)..', array[i+1] = '..tostring(array[i+1]))
      if array[i] > array[i + 1] then
        local temp = array[i]
        array[i + 1] = array[i]
        array[i + 1] = temp
      end
    end
  end
  return array
end

local arr = { 2, 5, 1 }
local sorted = bubblesort(arr)