I have clearly mentioned that if you can declare and call function in the language you are using then you're good enough to go through the blog. That answers yo

I have clearly mentioned that if you can declare and call function in the language you are using then you're good enough to go through the blog. That answers your "How absolute beginner" question. The reason why I wrote it is because of my own personal experience. In my programming class, my friends were having hard time understanding recursion so that was the primary motivation for writing this blog.