[Solved] Splitting array and get desired elements [closed]

This should also works…

array=["1","2","3,a","4,b"]
  for i in 0..array.length()-1
    if array[i].include?(",")
      ab=array[i].split(",")
      array[i]=ab[0]
    end

  end
print array #["1","2","3","4"]