Series of LED controlling using Switch

If there is 4 LED s and one switch. This switch controls the all 4 LED s.

  1. switch press 1 times - 1st LED turn on
  2. switch press 2 times - 1st LED turn off and 2nd LED turn ON like wise it happen.

So I want to know, what is the number of Now Turn ON Led(1st LED, 2nd LED, 3rd LED or 4th LED) .
Can anyone help me?

Please reword your post.

What is this project for?


Please don’t double post, it wastes time.