Question

How to convert lines in a multiline string starting with some "#" to start and end with "_" in Kotlin

Answer 1

fun main() {
    // Define the input string
    var str = "###Word1 Word2\nWord3\nWord4 Word5 Word6\n##Word7\n#Word8 Word9\n"

    // Define the regex pattern
    val regex = Regex("#+(.*)\n")

    // Replace all matches with the desired format
    str = regex.replace(str) { matchResult -> "_${matchResult.groupValues[1]}_\n" }

    println(str)
}



     
/*
run:
  
_Word1 Word2_
Word3
Word4 Word5 Word6
_Word7_
_Word8 Word9_
 
*/

 

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