LLD - Design — Tic-Tac-Toe Game
You are designing a scalable win condition checker for an n x n board game. Which approach best balances efficiency and scalability?
You are designing a scalable win condition checker for an n x n board game. Which approach best balances efficiency and scalability?
hard📝 Trade-off Q15 of 15
Step-by-Step Solution
Solution:
Step 1: Understand the cost of checking all lines
Checking all rows, columns, and diagonals after every move is expensive for large boards.Step 2: Focus on last move's related lines
Only the row, column, and diagonals that include the last move can change the win state, so checking these is efficient and scalable.Final Answer:
Only check the row, column, and diagonals related to the last move -> Option AQuick Check:
Check only affected lines after move for efficiency [OK]
Quick Trick: Check only lines affected by last move for best performance [OK]
Common Mistakes:
MISTAKES- Checking entire board every time wastes resources
- Ignoring diagonals in win checking
- Checking unrelated rows or columns
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