intdroduce talk - 11 mins
OOP - inheritance encapsulation - 15-20 mins
exact question longest substring non repeating - https://leetcode.com/problems/longest-substring-without-repeating-characters/ - 30 mins
only got O(n2) O(n2).... waffled for the last 7ish mins on improving O(n2) memory to O(n)...
this is my exact code: https://leetcode.com/playground/s6k8i9r9
i mean its a medium with 30% pass rating i had only 30 mins... do you think i did enough based on my ans to pass?