IBM MicroServices Java Developer interview questions

The interviewer was in a hurry to basically close the job opening. He reached out to me, asked me to give a hackerank based assessment and then after 3 hours comes and say you passed the assignment, your interview is scheduled in the next hour. Please be ready. The interviewer was good. Questions were practical based instead of stale Java theory. Two coding questions - find the first non repeated char in string and second largest element in the array.