Arista Networks Sr. Software Engineer interview questions

Question on string manipulation to collapse multiple lowercase consecutive elements into the letter and it's count. aaabbbccc -> a3b3c3 Solved it. Asked to write code for any sorting algorithm, Implemented merge sort. Didn't hear back and got rejection email after 3 months.

basics of c printfs. The patterns used in clg days was a bit confusing for a 15 yrs exp person like me. Dont know if its of any use on daily work as a SDE. Then BST programs 30mins 3 programs. Had written 2 and half and its correct for sure. Did ask for 5 extra mins to complete. But was denied. Keep strong in basics and expect interviewer a SE asian to be strict on time. I thought i would be in for 2nd given i answered most of them. But was rejected.