LendingPoint Senior Software Developer interview questions

Got in touch with them through a recruiter. Did 3 rounds of interviews. All were technical. Firt two went really well with good feedback. Asked questions about experience, tech stack, code habits, clean code, design principles, microservice design, tdd. Last interview was a leetcode questions. The question made no sense to me. I ended up solving it with them. but them interview must have thought it took too long, so I was passed up. Ridiculous assessment. Was a junior programmer who asked me the question.