Yahoo Software Engineer interview questions

I applied for Yahoo Mobile Software Engineer position and I got an email in two days regarding first round on Interview. First round was all about basic algo questions and then I was sheduled to second round. Funny thing is that, the interviewer forgot the scheduled time twice. Then due to unavailability of interviewer I was moved to third round which was making a demo app with no time limit. I completed it and get back with the solution in 1 week. After waiting for two weeks, I asked for any update and he kept deplaying and informing me regarding unavailibility of developer. And apparently he sent me an email that we have moved to another candidate.

Campus interview. Basic questions in Java . The interviewer is good and helps some times. Some of the questions are not easy. At least I didn't get some of the follow up questions answered. Some interviewers can be passive however.