A good memory indeed. Most of the leet code stuff is something i studied in highschool. Since then, everything of that sort was an import from a library followed by a function call. I forgot all of it, and have never had a need to do it again. Of course there are low level programming tasks that need it but i simply fail to understand their purpose. Perhaps i am in a different market all together because i never felt the need to interview someone based on leet code either and i’ve met some very smart people. Who knows, maybe i am wrong.