Ola Software Developer interview questions

There was three round. 1 one DSA ROUND:Given an array Arr[] of size N, print all the subsets of the array. Subset: A subset of an array is a tuple that can be obtained from the array by removing some (possibly all) elements of There was th 2. LLD round 3 HR round

Interviewer was there taking a interview. Asked questions and expected answers which can be both technical and non technical. Many questions were asked and many things were answered. Before this hr calls to confirm the time of the interview so that the person can schedule a call with hiring manager