dataset/README.md

Buggy Training Dataset

This dataset is organized as:

• problem_x/buggy.py: intentionally buggy implementation
• problem_x/test.py: correctness tests that should fail before fixes
• optional extra modules (helpers.py, cache.py, etc.) to support multi-file bug fixing

Current problems: problem_1 to problem_18.

Bug patterns included:

• off-by-one errors
• boundary condition mistakes
• incorrect sorting direction
• exception handling mistakes
• state/recency bugs in cache logic
• recursive base-case bugs
• parsing and whitespace normalization issues
• order-preservation regressions
• matrix transformation direction errors