I applied through college or university. The process took two months.

There were four rounds:

• Aptitude.
• Three-hour assignment plus one interview.
• Technical interview.
• HR interview.

The last two were face-to-face interviews. It was good. The aptitude test was online-based.

Given two sorted arrays of size m and n+m, merge them into one single sorted array without extra space and in O(n) time. There were two answers.