Count Number of Trees in Forest

Assign me this issue @abirbhattacharya82

The issue body has only the title and a request to be assigned, with no implementation details. Start by scanning the repository for existing problems/tests matching "Count Number of Trees in Forest" and locate the corresponding Java source and test files. Run the repository’s standard test command on that module/path and use it as verification. Done means the repository contains a completed implementation (and any required tests) clearly scoped to this exact problem.

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