Paytm interview experience | Set 26 (Experienced) Last Updated : 10 Jan, 2019 Improve Improve Like Article Like Save Share Report Round 1: Excel sheet column number representation Max profit in buy sell stock. Acid property of databases Hashmap implementation Swap linkedlist in pair of k Clustered indexes Isolation levels in SQL server Diff between hashing and encryption Round 2: Design notification system Sort array of 0s and 1s Make the class immutable Round 3: General discussion with manager about current project, work culture and job responsibilities Like Article Suggest improvement Next Paytm Interview Experience | Set 13 (For Experienced) Share your thoughts in the comments Add Your Comment Please Login to comment...