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compressString

Language/Type: C++ algorithms interview strings
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Write a function named compressString that accepts a string as a parameter and returns a new string that replaces repeated characters with a single occurrence of that character followed by the number of its occurrences. For example, the call of compressString("AABAAABBBCCCCDEEEEEE") should return "A2B1A3B3C4D1E6".

Function: Write a C++ function as described, not a complete program.

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