During the initial phase of the interview process, candidates are required to undergo a technical phone interview that typically lasts for about an hour.

This process begins with a brief 5-minute self-introduction, followed by a series of questions that test the candidate's knowledge and proficiency in data structures and algorithms.

The interviewer will be assessing the candidate's technical skills, problem-solving abilities, and overall suitability for the role.

The question is about data structures and algorithms.