题解 | 记数问题

import java.util.Scanner

fun main(args:Array<String>){
    val read = Scanner(System.`in`)
    val inputLine = read.nextLine()
    val tokens = inputLine.split(" ")
    val tar1 = tokens[0].toInt()
    val tar2 = tokens[1].toInt()
    var count = 0
    for (i in 1 ..tar1) {
        var temp = i
        while (temp!=0){
            var tmp=temp%10
            if (tmp == tar2){
                count++
            }
            temp /=10
        }
    }
    println(count)
}