when character are consecutive in a string , it is possible to shorten the character string by replacing the character with a certain rule. for example, in the case of the character string yyyyy, if it is expressed as # 5 y, it is compressed by one character in PHP


🤖 Code Explanation

This code is written in PHP and it is used to compress a string. The string is compressed by replacing each consecutive character with a # character followed by the number of times that character appears consecutively.

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