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Alien Dictionary - Failing Few Test Cases

Round 1

Questions: Specific question not provided.

Follow-up Question

Candidate's Approach

The candidate implemented a BFS solution for the Alien Dictionary problem. The approach involves:

  • Building a graph from the given words, where each character is a node and directed edges represent the order of characters.
  • Using an indegree array to track the number of incoming edges for each character.
  • Performing a BFS to determine the order of characters, starting from nodes with zero indegree.
  • The candidate noted that the solution fails for certain test cases, specifically returning an empty string instead of the expected order.
Interviewer's Feedback

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