Round 1 : (Coder pad)

1. Level order traversal of binary tree.
2. From 2 arrays find the maximum sum less than or equal to target value. The sum should be such that 1 number would be from 1 array and the other number from the other array.

For level order only approach was required. For the 2nd question proper code was required.

Round 2 : System Design

1. Game design - (A variant of number of islands problem but not as direct involved a lot of cases)
2. Design leaderboard for an online game. Features -
   • ~ 1 million active users
   • Top 10 should easily available
   • Every user should be able to know the people with ranking +10 <-> -10 from theirs.

Explained the second using - caching, master slave architecture, distributed systems concept etc.

After the second round I received feedback that my problem solving wasn't upto their expection. (I think they meant system design)

Overall good experience, but rejection is always sad :(

Keeping my fingers crossed anyway!