Question

How to select random two consecutive digits from a number in Kotlin

Answer 1

import kotlin.random.Random

fun getRandomTwoDigits(num: Int): String {
    val s = num.toString()

    if (s.length < 2) {
        return "Error: number must have at least 2 digits"
    }

    val start = Random.nextInt(s.length - 1) 
    
    return s.substring(start, start + 2)
}

fun main() {
    val num = 1234567
    val randomTwo = getRandomTwoDigits(num)

    println("Random two digits: $randomTwo")
}



/*
run:

Random two digits: 34

*/

 

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