TikTok Software Development Engineer (SDE) interview questions

Asked some basic BQ and a super easy DSA question. I solved the question quickly but got rejected. Feels like they have some interviewing KPI but they are not really hiring.

Online Assessment: For most roles, the process begins with an online assessment which candidates are expected to take​1​. Initial Screening: An initial screening is conducted to filter out unqualified candidates. This can be a phone or video interview performed by a recruiter or a member of the hiring team​2​. Phone Screening with HR: A phone screening with HR is a common step, which helps the company understand the candidate's background and assess their fit for the role​1​.