This is a phone interview.

The interviewer first asks about the most challenging project you have had, as well as some descriptions.

Then comes a technical programming problem, which requires you to write the whole code in the online panel.

In the end, it's the part for you to ask questions.

Implement a system (class) which has two methods.

One method takes a stock name and amount as input. It adds to the existing amount if the company's name is already in storage, otherwise, it adds a new entry.

The second method takes an integer as input and returns the number of companies with the largest stocks.