1253 : a 부터 b까지 출력하기

import java.util.Scanner;
 
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        if (a < b) {
            for (; a <= b; a++) {
                System.out.println(a);
            }
        } else if (a > b) {
            for (; b <= a; b++) {
                System.out.println(b);
            }
        }
    }
}