The interview consisted of five rounds, primarily focusing on easy to medium-level questions. The recruiter was supportive throughout the process.

Among the questions asked were Two Sum and Buy-Sell problems, which are common coding challenges. The Two Sum problem involves finding two numbers in an array that add up to a specific target. The Buy-Sell problem revolves around maximizing profit by buying and selling stocks at optimal times.

These questions gauge problem-solving skills and algorithmic thinking, making them popular in technical interviews.

Given an array of integers nums and an integer target, return the indices of the two numbers such that they add up to target.

You may assume that each input would have exactly one solution, and you may not use the same element twice.