Senior Software Engineer

I started with brute approach and then explain the solution via dry run, then interviewer asks me to optimize this then with a little time i provide the optimal approach using 2 variables keeping 2 previous maximum amount. & coded in java accurately.

As It was a standard problem i know the solution already, so started with brute by taking some extra space. Then storing the array product in a variable then with the final with a single output array using array indexes helps.

Tip 1: Started with the requirement gatherings functional and non functional and write the complete flow expected
Tip 2: Define the entities properly and the relations between them
Tip 3: As one should ready for cross questioning answers as i got how would i handle the concurrency from review to payment page.

Initially using the four threads i started then got little stuck but with the help of interviewer was able to print the same.

Tip 1: I have read about them previously so answered accordingly.
Tip 2: Provided the solution with the examples.
Tip 3: Be clear about what you speak.

Tip 1: Design the complete end to end flow of project.
Tip 2: Have the full clarity of things.
Tip 3: How the corner cases are handled in your applications. Must have the knowledge of the same.