I was contacted by a recruiter, followed by a phone screen interview.

Then, I was called for an onsite interview.

I had four rounds at the onsite:

• System Design
• Coding
• Algorithms and Data Structures
• Behavioral

Given a string and a character, return an output array where each element represents the minimum distance of that character to the given character.

For example, if "atlassian" and "a" are given, return [0,1,1,0,1,2,1,0,1].

Given a stream of unsorted elements, return the median.

WhatsApp System Design:

• Ability for a user to send a message in a group.
• Other users in the group should receive it instantly.