Question

How to get the reciprocal of the letters in a string with Kotlin

Answer 1

fun reciprocalString(input: String): String {
    val reciprocalMap = ('a'..'z').zip('z' downTo 'a').toMap() +
                        ('A'..'Z').zip('Z' downTo 'A').toMap()

    return input.map { char ->
        reciprocalMap[char] ?: char
    }.joinToString("")
}

fun main() {
    val original = "abc++def"; 
    val reciprocal = reciprocalString(original)
    
    println(reciprocal)
}


 
/*
run:
 
zyx++wvu
 
*/

 

70+ SQL courses for beginners and professionals