require 'benchmark'
require 'benchmark/memory'
#meu teste
def mydelete(a)
  i = 0
  while(i < a.size)
    if a[i] == 2
      a.delete_at(i)
    else
      i += 1
    end
  end
  return a
end
#teste do val
def valdelete(a)
  ary2 = []
  a.each_with_index do |e, i|
    if e == 2
      ary2 << i
    end
  end
  ary2.reverse_each do |i|
    a.delete_at(i)
  end
  return a
end
# benchmark setup
def benchmark(a)
  puts "Benchmark.bmbm"
  Benchmark.bmbm do |x|
    x.report("My delete") {mydelete(a)}
    x.report("Val delete") {valdelete(a)}
  end
  puts "Benchmark.memory"
  Benchmark.memory do |x|
    x.report("My delete") {mydelete(a)}
    x.report("Val delete") {valdelete(a)}
  end
end
benchmark( [2, 5, 2, 7, 2, 9])