1、import java.util.Scanner;
public class Demo4 { public static void main(String[] args) { Scanner sc=new Scanner(System.in); int i=(int)(Math.random()*100); while(true){ System.out.println("请输入数字：");
}
2、 int j=sc.nextInt(); if(j==0){ System.out.println("退出系统！"); break; } if(j>i){ System.out.println("大"); } if(j<i){ /*if(j==0){
3、 System.out.println("退出系统！"); break; }*/ System.out.println("小"); } if(j==i){ System.out.println("恭喜答对！"); break; } } }
4、import java.util.Scanner;
public class Demo4 { public static void main(String[] args) { Scanner sc=new Scanner(System.in); int i=(int)(Math.random()*100); while(true){ System.out.println("请输入数字："); int j=sc.nextInt(); if(j==0){ System.out.println("退出系统！"); break; } if(j>i){ System.out.println("大"); } if(j<i){ /*if(j==0){ System.out.println("退出系统！"); break; }*/ System.out.println("小"); } if(j==i){ System.out.println("恭喜答对！"); break; } } }
}
5、给定年份和月份，判断从当年1月份到当前月的上个月的总天数年份：2016月份：2控制台输出“2016年1月到2016年2月总天数60”
6、package javaDome;
import java.util.Scanner;
public class Day_1 { public static int getDay(int year,int month){ int day=0;
if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12) { day = 31; } if (month == 4 || month == 6 || month == 9 || month == 11) { day = 30; } if (month == 2) { if (year % 4 == 0 && year % 100 != 0 || year % 400 == 0) { day = 29; } else { day = 28; } } return day; }public static void main(String[] args) { Scanner sc = new Scanner(System.in); System.out.println("请输入年份："); int year = sc.nextInt(); System.out.println("请输入月份："); int month = sc.nextInt(); int month1=0,year1=0; int day= getDay(year,month); if(month==1){ month1=12; year1=year-1; }else{ month1=month-1; year1=year; } int day1=getDay(year1,month1); int day2=day+day1; System.out.println(year1 + "年" + (month1) + "月到" + year + "年" + month + "月总共" + day2 + "天。"); }
}
