Pocket Gems Software Developer interview questions

It was a one hour interview. With three questions. The interviewer seemed very disinterested. Neways they asked me 3 questions. First one was reverse a string. I did in place reverse using single for loop. 2nd one was a trick but popular question. 10 jars with 100marbles each. On jar has marbles weighing 1.1g others 1g. Find out which jar it is and in minimum number of comparisons. I knew the answer was one but forgot the methodology. Next one was find the least common ancestor of a binary tree(bot binary search tree).

I had an initial informal interview with the campus recruiter who got me a technical phone interview. The technical interview was on the phone, was 45 minutes long, and consisted of two programming questions that were relatively easy. The recruiter was pretty friendly, and the interviewer was pretty cordial. I felt confident about the interview, but I was told I wasn't a good fit.