The process started with a 20-minute phone conversation with a recruiter, where we discussed my experience and background.

This was followed by a 2-hour face-to-face or video technical interview.

The technical interview was quite challenging. Partway through, the interviewer informed me that I wasn’t the right fit for the role.

Initially, I was surprised to receive this feedback during the interview itself. However, I ultimately appreciated their transparency, as it gave me a real opportunity to understand where I fell short and gain valuable feedback in real time.

Leetcode style: Swap the first n letters of s with the rest of the string.

1. In O(N) time and space.
2. In O(N) time, O(1) space.

Swap the first n letters of s with the rest of the string.

Args: s: Input string n: Length of the prefix to swap

Returns: Modified string with the first n letters swapped with the rest.

Example: s = "abcdefgh" n = 3 result = swap_prefix_suffix(s, n) print(result) # Output: "defghabc"

System design question: Design Twitter.