Booking.com has a very simple recruitment process for its technology department:

1. HackerRank Test (4 programming problems to be solved in 75 minutes)
2. Screening Interview (simple screening)
3. Telephonic Interview (1 data structure problem, 1 Objective-C problem)
4. Onsite Interview (4 interviews in a row)

The onsite interview involves the following rounds:

• HR Interview
• iOS Interview (in-depth)
• Data Structure Interview (in-depth)
• FIT Interview (culture fit)

I applied for the iOS Developer position and went through all the steps of the recruitment process.

The experience was positive from the start, as I got the opportunity to directly interact with the Booking.com team and explore Amsterdam.

However, the bad part I felt was the slow response from the recruitment team. Unfortunately, my recruiter did not get back to me after the onsite interview (a huge disappointment). He committed to replying within a day, but until today, I haven't received any response after multiple follow-up emails.

I contacted their office after two weeks and learned that the position had been filled by another candidate. I have asked for constructive feedback, but it is useless because they do not respond.

Overall, I had good exposure. The interviewers were very friendly and helpful at all stages. However, the recruitment team made a very bad impression at the end.

Architecture design of the first two screens of the Booking.com app.

Photoshop has a function, 'fill color,' that fills color inside a given shape.

You need to write a method to fill color. This method takes a 2D array and coordinates (x, y) from where it will start filling the color inside the whole shape. If any coordinate is already filled with color, leave it and move ahead.

fill_color(int arr[][], int x, int y)