Question

java语言写出：输入一个秒数。转换为小时：分：秒的格式输出。

Answer 1

Java程序：

import java.util.Scanner;

public class test {
	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int num;
		int hour = 0;
		int minute = 0;
		int second = 0;
		
		System.out.print("请输入秒数：");
		num = scan.nextInt();
		
		second = num % 60;
		num -= second;
		if(num > 0) {
			num /= 60;
			minute = num % 60;
			num -= minute;
			if(num > 0) {
				hour = num / 60;
			}			
		}
		
		System.out.printf("%d:%d:%d\n", hour, minute, second);
    }
}

运行测试：

请输入秒数：9876

2:44:36

Answer 2

import java.util.Scanner;
public class Convert{
public static void main(String[] args){
System.out.println("请输入时分秒，格式为hh:mi:ss");
Scanner input=new Scanner(System.in);
String s=input.next();
int index1=s.indexOf(":");
int index2=s.indexOf(":",index1+1);
int hh=Integer.parseInt(s.substring(0,index1));
int mi=Integer.parseInt(s.substring(index1+1,index2));
int ss=Integer.parseInt(s.substring(index2+1));
System.out.println(hh*60*60+mi*60+ss);
}
}

Answer 3

mport java.util.Scanner; public class test { public static void main(String[] args) { Scanner scan = new Scanner(System.in); int num; int hour = 0; int minute = 0; int second = 0; System.out.print("请输入秒数："); num = scan.nextInt(); second = num % 60; num -= second; if(num > 0) { num /= 60; minute = num % 60; num -= minute; if(num > 0) { hour = num / 60; } } System.out.printf("%d:%d:%d\n", hour, minute, second); }}