The initial phone round was a technical interview, covering my experiences in past internships. Following this, they scheduled a one-hour technical round with the hiring manager.

The question asked was quite straightforward. It was a tree-based problem involving a node defined with its father, mother, age, and gender. It also included a list of the node's children.

I was asked to provide:

• The list of all older sisters of the node.
• A list of all ancestors.

The question was not difficult, and I managed to provide an answer. I'm unsure what these individuals were seeking.

After all this, I received an email stating my background did not match their requirements. I don't believe they needed to waste my time initially to reach this conclusion, as they had my resume to do so.

Person class with mother, father, age, gender, and siblings defined.

Now find older sister and ancestor.