Implement a string processor in Python or Java that compresses and decompresses a series of letters (e.g., converting "AAABBC" to "A3B2C1" and vice versa).
Problem
Implement a string processor in Python or Java that compresses and decompresses a series of letters (e.g., converting "AAABBC" to "A3B2C1" and vice versa).
Your answer
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