docs(readme): add CI status badge

lzwjava · lzwjava · commit d5e69dfe53a0 · 2025-07-05T03:56:42.000+08:00
diff --git a/README.md b/README.md
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 # Algorithm Problem Solutions
 
+[![Compile](https://github.com/lzwjava/algorithm-solutions/actions/workflows/maven.yml/badge.svg)](https://github.com/lzwjava/algorithm-solutions/actions/workflows/maven.yml)
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 Problem solutions of some algorithm problems from online judge platforms.
 
 | platform | problems solved | 
