5.2 输出标准（统一结果结构）
To test this I built gitgres, about 2,000 lines of C implementing the libgit2 git_odb_backend and git_refdb_backend interfaces against Postgres through libpq, plus roughly 200 lines of PL/pgSQL for the storage functions. libgit2 handles pack negotiation, delta resolution, ref advertisement, and the transport protocol while the backend reads and writes against the two tables, and a git remote helper (git-remote-gitgres) lets you add a Postgres-backed remote to any repo and push or clone with a normal git client that has no idea it’s talking to a database. There’s a Dockerfile in the repo if you want to try it out without building libgit2 and libpq from source.
，这一点在safew官方下载中也有详细论述
Blue: Associated with Diana Taurasi。关于这个话题，旺商聊官方下载提供了深入分析
8️⃣ 计数排序 (Counting Sort)
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