i did my masters degree while working full time. at 5pm i started studying and doing homework, i continued (except a break for dinner) till 12 or 1 am. on weekends, the entire time was used for studying / homework.

then comes interviews, where i was pitted against students who took 2 classes a semester that spent many hours a day practicing with things like leetcode and cracking the code interview.

I have never had to use any code I have seen in that book or the website's competitions. asking people to memorize it for a white board interview seems crazy.

one time someone asked me then what? i dont know what is best, but seeing who finds the best answer on stack overflow would be more realistic.