> I think I found it difficult to do the lab questions with confidence. My code made less and less sense to me as time went on, and I wasn't able to approach each problem systematically. I'm sure there are others who feel the same, having not developed a keen ability to clearly approach a problem. I was wondering if there are recommended extension work to ensure that the relevant skills, understanding, and techniques are sufficiently developed for those who feel deficient? I am aware of the recommended High Demand textbook on DSA, but I wasn't sure if the questions in there would be representative.