feat: add rust solutions to lc problems: No.2209,2211 #4875
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Pull request overview
This PR adds Rust implementations for two LeetCode problems: #2209 (Minimum White Tiles After Covering With Carpets) and #2211 (Count Collisions on a Road).
Key Changes:
- Added Rust solution for problem 2209 using dynamic programming with memoization
- Added Rust solution for problem 2211 using string manipulation
Reviewed changes
Copilot reviewed 6 out of 6 changed files in this pull request and generated no comments.
| File | Description |
|---|---|
| solution/2200-2299/2209.Minimum White Tiles After Covering With Carpets/Solution.rs | Implements a DP solution with recursive memoization to find minimum white tiles after covering with carpets |
| solution/2200-2299/2211.Count Collisions on a Road/Solution.rs | Implements an elegant string-based solution to count collisions by trimming edge cases |
Note: The files being added exist in the repository but are not available in the current PR diff context, so no inline comments could be generated. Based on the code review:
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Problem 2209: The solution correctly implements dynamic programming with memoization. The algorithm matches the Python and Java implementations in logic. The code uses appropriate data structures and handles edge cases properly.
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Problem 2211: The solution is clean and concise, correctly using Rust's string methods (
trim_start_matchesandtrim_end_matches) to handle the core logic, matching the Python implementation's approach.
Both solutions appear to be correct implementations that follow the established patterns in the codebase.
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