I am following a series of programming articles. In order to understand them better, I type in the code examples and play around with them - sometimes I change the code, sometimes I don't. I also like to comment some lines with quotes from the original article. I cannot find any licensing or attribution information in and around the articles.
I would like to put the project with the examples and the quotes up on GitHub. If I had written all the code from scratch I would have used a BSD or an Apache license. I do mention and link to the original articles in the
What is an appropriate approach to licensing and attribution in this case?