Rust LeetCode Solutions

My solutions for LeetCode problems in Rust. The original problem fetching and testing framework came from https://github.com/aylei/leetcode-rust and evolves different features from https://github.com/mapx/leetcode-rust.

Run cargo run, then provide an id to initialize the template submission file of "problem #id".
Run cargo test n{id} to test the solution for "problem #id".
Run cargo test to test all solutions.