I applied online. The process took 4 days. I interviewed at Meta (Palo Alto, CA) in Aug 2009
Interview
I had 2 telephonic interviews and the questions are below. Recruiters are pretty cool in facebook.
1. General Resume stuff.
2. Merge Sort - Write code for it. Complexity.
3. SQL - self join: Asked me to write a query, don't remember the exact question.
4. Advantage of B Trees - Used in databases for indexing. Adv. Less number of memory lookups because of less hierarchy. Large fanout.
Interview questions [1]
Question 1
Given a set of inputs <number, userid> in a log file:
log: <number, userid>
example:
1,2
1,1
2,1
3,1
1,2
out: <number, count>
1,2
2,1
3,1
The output should be all the unique numbers and the count associated with them.
Overall, the process took a little over two weeks, which felt a bit longer than I anticipated. After a quick screening, I went through two technical rounds focusing on coding and DSA concepts. One of the questions was a classic palindrome check; mid-way through, I realized it was something I had practiced on PracHub just days earlier. The final step was a casual behavioral interview. I was relieved to get an offer shortly after, which I happily accepted.
Interview questions [1]
Question 1
Given a string, determine if it is a valid palindrome considering only alphanumeric characters and ignoring case.
I applied online. I interviewed at Meta (Menlo Park, CA)
Interview
It's honestly striaght from leetcode tagged
There are no surprises if you do tagged you would be good and do well.
System design is much harder. Would recommend using hello interview.
Interview questions [1]
Question 1
Design Twitter and consider if it was suddenly an extremely low latency env