Question

How to convert part of a string between two indexes to uppercase in Kotlin

Answer 1

fun convertPartToUppercase(str: String, start: Int, end: Int): String {
    // Extract the part of the string before the start index
    val before = str.substring(0, start)

    // Convert the specified part to uppercase
    val upperPart = str.substring(start, end).toUpperCase()

    // Extract the part of the string after the end index
    val after = str.substring(end)

    return before + upperPart + after
}

fun main() {
    var s = "kotlin programming"

    s = convertPartToUppercase(s, 3, 6)
    println(s)

    s = convertPartToUppercase(s, 13, 14)
    println(s)
}

  
   
/*
run:
 
kotLIN programming
kotLIN prograMming
 
*/

 

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