package exercise;import java.util.Scanner;public class Sum {    public static void main(String[] args) {        System.out.println("请输入m,n:");        Scanner sc = new Scanner(System.in);        int m = sc.nextInt();        int n = sc.nextInt();        int sum = 0;        if (m <= n) {            while (m <= n) {                sum = sum + m;                m++;            }        } else {            while (n <= m) {                sum = sum + n;                n++;            }        }        System.out.println(sum);    }}