Round 1 was as normal only like hashset hashmap questions related to what happen if we take object as a key to hashmap pre condition check should be immutable object should and equal and hashcode should be written properly then what if we return 1 to hashcode how it will behave what if update object post insertions how map will behave then character frequency dsa question immutable class and rest full form what rest api do then round 2 difficult output based inhertiance questions two three and then what id we remove @Service annotation with component and then inventory only one stcok senario based like what happen what sort of db lock etc operation you performed then questions of rotate array from k positon then a stupid questions of number to word very edge case question i explained the approach but didn't comeup to solutions so not selected