Very long (almost 2.5 hours), technical interview with different interviewers in a series. The first interview was kind of a warm-up, the second and third got tougher. There was no break in between. Questions ranged from general data structures to mid-level LeetCode problems.

• Questions on data structures: uses of stack and queue, linked list insertion/deletion, etc., runtimes.
• General C/C++ language specifics: heap and stack memory, pointers, compilation process, etc.
• Multiple bit manipulation questions, such as writing code to flip a bit.
• Write code to print a matrix in spiral order.