SDE-1 at Oracle

How it went

What they would tell you

How to prepare

Their background

Round by round

1. 1

   Coding Round60 min

   In-person, on paper coding round Coding Questions:

   • Find the first repeating element in an array.

   • Rotate an array by k positions.

   • Check if a number is a palindrome without converting it to a string. OOP / Java Questions:

   • Explain abstract classes and when to use them.

   • Difference between == and .equals() in Java.

   • Explain constructor overloading with an example.

   Database Question:

   • Write a query to find employees whose salary is above the average salary in the Employee table.
   • Left Rotate Array by K Places
2. 2

   Technical Interview 160 min

   Coding Question:

   • Merge overlapping intervals given a list of intervals. Web Design Question:

   • How would you optimize a search API for a database with millions of records? Conceptual Questions:

   • How would you handle memory leaks in a Java application?

   • Difference between synchronous and asynchronous programming.

   • Merge Overlapping Subintervals
3. 3

   Technical Interview 240 min

   Asked to draw UML class diagram of my resume mentioned project, I explained classes, relationships, interfaces, and design patterns used.

4. 4

   Final Discussion60 min

   Project related Q/A's Questions about salary expectations, notice period, and career goals. Last question Tell me about a time you faced a challenge and how you overcame it.

What came up