The overall process was very seamless. It consisted of:

• 1 HackerRank round
• 1 call with the recruiter
• 2 Telephonic Interviews
• Team Matching

Prepare well, as LinkedIn offers one of the best internship programs in the industry. I would say LinkedIn LeetCode high-frequency questions and "Cracking the Coding Interview" will be good practice for the interviews.

HackerRank:

• 3Sum less than K (most optimized version)
• 1 dynamic programming question (which I don't remember)

Recruiter:

• It was a general discussion to see if I was a good fit for LinkedIn.

Telephonic 1:

• Print Binary Tree Level Order (later asked to print zig-zag level order)
• Find all permutations of a string

Telephonic 2:

• Matching Parentheses
• Valid Triangles (check LeetCode)