If you want to pass LeetCode interviews, you have to grind a lot of problems.
Tips
culture
刷题 culture is core to the gaokao (高考) and to Chinese tech-interview prep. The verb 刷 (shuā, to brush/scrub/swipe) suggests doing problems mechanically and in volume — quantity over depth. Programmers also say 刷 LeetCode.
memory
Same 刷 as 刷牙 (brush teeth), 刷卡 (swipe a card), 刷视频 (scroll videos). The shared image is repetitive, low-friction motion: you 'brush through' problem after problem.
