Walmart Global Tech | Senior Software Engineer

The recruiter reached out through LinkedIn.

Round 1: DSA

1. Detect cycle in a linked list and return the position.
2. Number of islands.

The HR confirmed the next week that the interview was cleared and wanted to proceed with Round 2 after two days.

Round 2: Java

1. Min stack implementation.
2. Hashmap maintaining order of insertion.
3. High-Level Design for Twitter.

Cleared, Round 3 scheduled next week.

Round 3: Design

1. Snake and ladder - design high-level and low-level design with a maximum of 8 players and 100 numbers, define entities for the same.
2. Design patterns used so far, factory.
3. Singleton class.
4. Synchronized method.

Verdict: Rejected.