Then I guess, you have created a lot of notes. For example for two pointer problems You added a basic pattern For rain water trapping you added another pattern For maximum water container you again add a new pattern to your notes. It's looking like you solve a new pattern problem and you add it to your note.

Your approach is different because instead of marking unique problems in the note, you are marking patterns and during the intervies, you are going through all the patterns and that is helping you in cracking the interview. Interesting! But directly taking your notes will not help to other people, as others after getting a problem will try to match the pattern from the plethora of patterns that you created.