用java编写一个程序利用for写从键盘输入n求s=1+1+2+1+2+3++1+2+3++n以梯形打印出来

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.print("请输入n：");
        int n = scanner.nextInt();
        int s = 0;
        for (int i = 1; i <= n; i++) {
            int sum = 0;
            for (int j = 1; j <= i; j++) {
                sum += j;
            }
            s += sum;
        }
        System.out.println("s=" + s);

        // 打印梯形
        for (int i = 1; i <= n; i++) {
            for (int j = 1; j <= i; j++) {
                System.out.print(j);
            }
            System.out.println();
        }
    }
}

输入示例：

请输入n：5

输出示例：

s=35
1
12
123
1234
12345
``