Reddit tech screen - senior software engineer

Round 1

Questions: Let's pair code a program that can do scoring for a game: The game has exactly 2 players. Each player scores 1pt at a time. Each player starts with 0 points. The player with a score >= 4 wins but they must win by 2 pts.

• 4 to 2 wins
• 4 to 3 does not win
• 5 to 3 wins If the score is tied at or above 3, we change both scores to 3 and keep going until one player wins by 2. We should be able to:

1. Write a function that returns the current score.
2. Write a function that increments the score of a given player, error if the game is already over.
3. Write a function that returns which player won or an error when the game is not over yet.

Congrats, you basically implemented the scoring mechanism for Tennis! In our modified tennis game, sets are made up of games. A set is a group of 5 games. A player wins a set if they win 3 games. After a game is done, the same two players play another game until the set is over. Let's implement sets now.

There are a few tweaks though. Tennis has different names for the scores:

• 0 is called 'love'.
• 1 is called '15'.
• 2 is called '30'.
• 3 is called '40'. A tied score below 3 is called “All”.
• 0-0 is "Love All"
• 1-1 is "15 All"
• 2-2 is "30 All"
• 3-3 is called “Deuce”
• 4-3 is called “Advantage Player 1”
• 3-4 is called “Advantage Player 2” If the game is over, the score should show as "Player 1 Wins” or "Player 2 Wins". Let's add a new function to get the current tennis score for a game.

Let's update the code to handle the fact that players switch sides between games.

[execution time limit] 3 seconds (java)

[memory limit] 1 GB