> Well that's the point of the exercises I suggest - to learn recursion :-/
Then we must have been talking past each other. We are considering this problem here:
>> I never took affinity to computer science/math, but I love building real world products with software. [...] I am struggling with all the interviews that have these leetcode problems.
Then your advice to these interview problem is to learn some CS - the useful parts of it? E.g. recursion is CS.
> 1. To handle trees easily you have to understand recursion.
Well that's the point of the exercises I suggest - to learn recursion :-/
> No Big-O notation. Interviewers usually ask questions about time/space complexity
Well, that's the other half of the interview, I only promised that my method will cover half the questions :-)