第三章（二次）作业续。。。

Posted 2020-10-10

 /*3-6.程序员;龚猛*/
　1 package zhenshu;
 2 import java.util.Scanner;
 3 public class text {
 4 
 5     public static void main(String[] args) {
 6     Scanner input = new Scanner(System.in);
 7     
 8     System.out.print("Enter an integer：");
 9     int number = input.nextInt();
10     
11     if (number % 2 == 0 && number % 3 == 0)
12         System.out.println(number + "is divisible by 2 and 3.");
13     
14     if (number % 2 == 0 || number % 3 == 0)
15         System.out.println(number + "is divisible by 2 and 3.");
16     
17     if (number % 2 == 0 ^ number % 3 == 0)
18         System.out.println(number + "is divisible by 2 and 3. but not both.");
19 
20     }
21 
22 }

 1 /*3-7*/
 2 package zhenshu;
 3 import java.util.Scanner;
 4 public class Year {
 5 
 6     public static void main(String[] args) {
 7         Scanner input = new Scanner(System.in);
 8         System.out.print("Enter a year:");
 9         int year = input.nextInt();
10         
11         boolean isLeapYear =
12                 (year % 4 == 0 && year % 100 != 0) || (year % 400 == 0);
13         
14         System.out.println(year + "is a leap year?" + isLeapYear);
15     }
16 
17 }

 

 1 /*3-8*/
 2 package zhenshu;
 3 import java.util.Scanner;
 4 public class lottery {
 5 
 6     public static void main(String[] args) {
 7         int lottery = (int)(Math.random() * 100);
 8         
 9         Scanner input = new Scanner(System.in);
10         System.out.print("Enter your lottery pick (two digits):");
11         int guess = input.nextInt();
12         
13         int lotteryDigit1 = lottery / 10;
14         int lotteryDigit2 = lottery % 10;
15         
16         int guessDigit1 = guess / 10;
17         int guessDigit2 = guess % 10;
18         
19         System.out.println("The lottery number is" + lottery);
20         
21         if(guess == lottery)
22             System.out.println("Exact match: you win $10,000");
23         
24         else  if(guessDigit2 == lotteryDigit1 && guessDigit2 == lotteryDigit2 )
25             System.out.println("Match all digits: you win $3,000");
26         else  if(guessDigit1 == lotteryDigit1 || guessDigit1 == lotteryDigit2
27                 ||guessDigit2 == lotteryDigit1 || guessDigit2 == lotteryDigit2)
28             System.out.println("Match all digits: you win $1,000");
29         else
30             System.out.println("Sorry,no match");
31         
32         
33 
34     }
35 
36 }