The process consisted of basically four rounds.

First round was an online test which was proctored. You need to be well-versed with computer science subjects, output problems, data structures and algorithms (output-based) questions. Reasoning (quantitative and qualitative) was also included, as was an English and comprehension section.

There were three interview rounds:

• Round 1: Very basic DSA, focused on core computer science subjects.
• Round 2: DSA from GfG, focused on core CS subjects again. At Oracle, they don't need people who are good at DSA; they need those who are good at cramming things and subjects.
• Round 3: Simple DSA, some project-related, and some HR-type questions were included.

Reverse a string in O(n) time.