clase de arreglos

#nota1 = 13
#nota2 = 15
#nota3 = 20
#nota4 = 4
#nota5 = 8

notas = [13,15,20,4,8]

#for i in 0...notas.length
#	puts 1 + notas[i]
#end

#i = 0
#while i < notas.length
#	puts notas[i]
#	i += 1
#end

# notas.each_with_index { |nota, i| 
	# puts "#{i} #{nota}"
# }

# nota_mas_uno = notas.map { |nota| 1 + nota}
# puts nota_mas_uno

#p notas.select { |nota| nota < 10 }.reduce(:+)
#p notas

mayor = 21
for i in 0...notas.length
	if (notas[i] < mayor)
		mayor = notas[i]
	end
end
puts mayor

p notas.sort.last