It started with PPT. Then there was a written paper of 1.5 hours. The written paper consisted of two sections. The first section had questions related to Time Complexity, Infix, Prefix, Postfix Expressions, DB (Queries) and some basic question to check your if your coding basics are clear. The second section consisted of 3 coding questions based on Arrays, Trees, etc. Mostly they want to check if you can build algorithms efficiently. You also have to mention the time and space complexity of code.