Question

How to move the digits of a string with digits and letters to the beginning of the string in Kotlin

Answer 1

fun moveDigitsToFront(input: String): String {
    val digits = input.filter { it.isDigit() }
    val letters = input.filter { !it.isDigit() }
    return digits + letters
}

fun main() {
    val input = "d25c4b3ea1"
    val result = moveDigitsToFront(input)
    
    println(result)
}
 
 
  
/*
run:
  
25431dcbea
  
*/

 

70+ SQL courses for beginners and professionals