Four easy to medium level leet code problem. I solved all of them, all test case passed. But I don't understand why I didn't get a chance to be interviewed. Then got barred for a year...

two interviews ; both coding. the interview process was in overall ok. First interviewer seemed new but still helpful. Asked basic questions and gave some hints. second one a bit experienced gave a lot of hints. started taking about work , mine and their and onto coding.