Código Ruby – Ordenamiento por Selección

def seleccion_sort(arr)
  n = arr.length
  for i in 0..n-2
    min_index = i
    for j in i+1..n-1
      if arr[min_index] > arr[j]
        min_index = j
      end
    end
    arr[i], arr[min_index] = arr[min_index], arr[i]
  end
end

arr = [64, 34, 25, 12, 22, 11, 90]
seleccion_sort(arr)
puts "Arreglo ordenado: #{arr}"