Round 1:

Find the largest substring with non-repeating characters.

• Python basics.
• MySQL queries.
• MongoDB queries.

Round 2:

• Implement LRU (Least Recently Used) cache.
• Implement LFU (Least Frequently Used) cache.
• Python-related questions.
• Database questions (SQL vs NoSQL).

Round 3: HM Round

• N-ary tree question (was relatively easy).
• Questions on API design.
• Project-related discussion.

Round 4: HM Round (Conducted specifically for me as my application was moved to another team):

• No DSA questions as feedback was already available from previous rounds.
• In-depth project discussion.
• General questions (reason for switching, preferred location, etc.).

Status: All rounds cleared
Package: 20 base + 1 JB
Stats: 2300+ contest rating, from tier 1 college with 1 yr mixed exp of dev + automation