感謝巴打詳細回覆
中間休息時間偷偷地覆你呢個 reply

其他有啲巴打太主觀,秒回咁滯,我估應該唔駛返工,再覆黎覆去實在太攰
第一,唔係非黑即白,我哋唔係日日都齋操 leetcode

好多方面都有教(有巴打唔鍾意我用個「操」字,用返個「教」字),我哋教 backend 嘅 scope 同你呢條問題都好似,一樣執著 coding practice
第二,你都係非 CS degree,應該明白唔係 「非degree = 一定寫垃圾code」同埋「degree = 一定冇垃圾 code」
第三,你呢個問題,我哋嘅畢業生有可能會答到,不過我哋教 TypeScript,冇咗 multithreading。上年有個畢業生入咗 Aftership,佢條 interview 問題同你呢個差唔多,都係包晒 pub/sub, business logic, algorithm, coding practice