Day 1/60: Rust DSA environment setup

60 Day Rust DSA Challenge

Today I focused on building a Rust workspace that makes daily DSA work fast to run, test, and benchmark. The strongest checkpoints were keep the project layout simple enough that daily problems share tests and helpers cleanly, use cargo, tests, and benchmarks as part of the feedback loop instead of as afterthoughts, and treat tooling choices as part of the practice system because they compound over 60 days.

The mistake I wanted to avoid was treating the workspace as disposable and rebuilding the same helpers every day. The day felt better once the invariant stayed visible and each update had one job.

The goal for tomorrow is simple: keep the rule clear enough that the next variation still feels related to the same idea. I also want to keep tracing tiny examples because they expose weak assumptions faster than large random tests.