Replace the exercise pages' Python-only snippets with source-backed implementations for the 13 visible programming languages, and localize reader-facing comments by site language. Zig remains out of scope.
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* feat(codes/cpp): Add cmake build method
* feat(codes/cpp): Modify the cpp support version to c++17
* feat(codes/cpp): fix graph_adjacency_list.cpp cannot be compiled into an executable
* style(codes/cpp): Adjust the code to enhance compatibility.
* feat(codes/cpp): Change cpp version from 17 to 11.