Rust

Rust is a systems programming language focused on memory safety and performance without a garbage collector. It is gaining popularity for roles in systems programming, WebAssembly, and performance-critical applications. For LeetCode, Rust is the most challenging language to use due to its strict ownership model, which can make pointer-heavy problems like linked lists and trees significantly more complex to implement than in other languages. If you are already comfortable with Rust and want to use it for interviews, it is possible and impressive, but it is not recommended as a starting point for interview preparation.