计算分钟: done, after 计算小时, 1d 计算秒数: done, after 计算分钟, 1d 二、步骤及代码示例 1. 获取总秒数 importjava.util.Scanner;publicclassMain{publicstaticvoidmain(String[]args){Scannerscanner=newScanner(System.in);System.out.println("请输入总秒数:");inttotalSeconds=scanner.nextInt();scan...