20/08/31 08:12:50.04 o+KAewBM.net
>>401 Ruby
def f(n)
(1..n).map{|v| [v]*v}.flatten
end
20/08/31 08:12:50.04 o+KAewBM.net
>>401 Ruby
def f(n)
(1..n).map{|v| [v]*v}.flatten
end
20/08/31 08:12:50.04 o+KAewBM.net
>>401 Ruby
def f(n)
(1..n).map{|v| [v]*v}.flatten
end