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Uber·Software Engineer·Technical Phone Screen·Intermediate

Intermediate
May 2026

Summary

Uber SWE interview, just one coding question from what I can tell. Pretty straightforward simulation problem but there's a small wrinkle if you're not paying attention.

Questions Asked (1)

Q1

Given an array of integers representing player ranks (lower value means higher rank), simulate a tournament bracket where adjacent pairs compete and the higher-ranked player advances each round. Print the results of each round.

Algorithms & Data Structures
Author's notes

The core logic is simple enough, just iterate through pairs and keep the winner.

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AI HintsAI Generated

Suggested Approach

Clarify the problem constraints and edge cases, then simulate the tournament round by round using a list. For each round, iterate through adjacent pairs, compare ranks, and collect winners; print the round results and repeat until one player remains.

Pro tip: Mention that you can optimize space by reusing the array or using a queue, but prioritize clarity in the simulation. Also, discuss how to handle odd number of players (e.g., bye) and tie-breaking rules.

1. Clarify requirements and edge cases

Ask about input size, tie-breaking, odd number of players, and output format. Confirm that lower value means higher rank.

2. Design the simulation loop

Plan to iterate rounds until one player remains. In each round, process pairs of adjacent players, determine the winner, and collect winners for the next round.

3. Implement round processing

For each round, create a new list for winners. Loop through the current list in steps of 2, compare ranks, and append the winner. Handle odd length by advancing the last player automatically.

4. Print and update

After each round, print the results (e.g., match outcomes and winners). Update the current list to the winners list and repeat.

5. Analyze complexity and test

Discuss time complexity O(n) per round, total O(n log n) for balanced tournaments. Test with small cases, odd numbers, and ties.

Key Points to Mention

  • Time and space complexity analysis
  • Handling odd number of players (bye)
  • Tie-breaking rules (if any)
  • Edge cases: single player, all same ranks
  • Output format: printing each round's matches and winners
  • Potential optimizations (e.g., using a queue)

AI-generated suggestions, not part of the candidate's original notes. May be inaccurate — verify before relying on them.