Paytm interview experience | Set 26 (Experienced)

Round 1:

1. Excel sheet column number representation
2. Max profit in buy sell stock.
3. Acid property of databases
4. Hashmap implementation
5. Swap linkedlist in pair of k
6. Clustered indexes
7. Isolation levels in SQL server
8. Diff between hashing and encryption

Round 2:

1. Design notification system
2. Sort array of 0s and 1s
3. Make the class immutable

Round 3:

1. General discussion with manager about current project, work culture and job responsibilities