A solution to a codefights daily puzzle that was amusing and might be useful to reference

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A solution to a codefights daily puzzle that was amusing and might be useful to reference

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Last edited Mar 22, 2016

Created on Mar 22, 2016

This example demonstrates a Python solution to a Codefights puzzle that decompresses a run-length encoded string, sorts its letters, and returns the kth character. The visualization shows how the algorithm groups identical letters using `itertools.groupby` and `sorted`, then aggregates their counts with `sum`. It uses `re.findall` to parse letter-number pairs and a pairwise iteration to handle adjacent matches. The code returns -1 for invalid inputs or when k exceeds the total character count, illustrating a compact approach to string compression challenges.

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