Dennis Sweeney <sweeney.dennis...@gmail.com> added the comment:
For convenience, attached is a quick and dirty Tkinter GUI that lets you step
through the Crochemore/Perrin Algorithm on your choice of inputs, just for
play/discovery.
A good illustration of the memory for periodic needles can be found by testing:
haystack="456,123,123,456,123,123,456"
needle="123,123,123,"
The GUI program does not implement the Boyer-Moore/Horspool/Sunday-style
shift-table. In the current PR 22904, this table is used in exactly those
situations where the GUI says "Matched 0, so jump ahead by 1".
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Added file: https://bugs.python.org/file49672/twoway_demo.py
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<https://bugs.python.org/issue41972>
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