As I mentioned in my post on [coding interviews frameworks](https://www.zhenghao.io/posts/framework-for-coding-interview), I have been interviewing a lot for the past year - not conducting interviews, I was the candidate being interviewed. Most of the interview processes I had with big tech companies consisted of 1-2 system design rounds depending on the level of the role. Unlike traditional back end-focused system design questions, for which you can find lots of prep resources online such as the famous Grokking System Design Interview or System Design Primer, I didn't know what to expect for a front end-focused system design interview as there are very few resources out there talking about this type of interviews.
The task the interviewer asks you to do is to write out a function that takes the amount of the times being purchased as the input and output the price per unit according the table. So if the input is 5, the function returns 5, and if the input is 6, the function returns 4... you get the idea.
That's it. That is the whole question. "This is even simpler than [Fizz Buzz](https://leetcode.com/problems/fizz-buzz/)," you think to yourself, "but it might lead to more difficult follow-up questions, like it might get tweaked into a binary search problem or something". So you start to write the following simple solution, expecting more in-depth follow-up questions to come.
Zhou Yuhang
2 months ago
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