Problem: Guessing Birthdays
You can find out the date of the month when your friend was born
by asking five questions. Each question asks whether the day is in one of the
five sets of numbers.
File name :
GuessBirthday.java
import java.util.Scanner;
public class GuessBirthday {
public static
void main(String[] args) {
String set1
=
"
1 3
5 7\n" +
" 9
11 13 15\n" +
"17
19 21 23\n" +
"25
27 29 31";
String set2
=
"
2 3
6 7\n" +
"10
11 14 15\n" +
"18
19 22 23\n" +
"26
27 30 31";
String set3
=
"
4 5 6
7\n" +
"12
13 14 15\n" +
"20
21 22 23\n" +
"28
29 30 31";
String set4
=
"
8 9 10 11\n" +
"12
13 14 15\n" +
"24
25 26 27\n" +
"28
29 30 31";
String set5
=
"16
17 18 19\n" +
"20
21 22 23\n" +
"24
25 26 27\n" +
"28
29 30 31";
int day = 0;
// Create a
Scanner
Scanner
input = new Scanner(System.in);
// Prompt
the user to answer questions
System.out.print("Is your birthday in Set1?\n");
System.out.print(set1);
System.out.print("\nEnter 0 for No and 1 for Yes: ");
int answer =
input.nextInt();
if (answer
== 1)
day += 1;
// Prompt
the user to answer questions
System.out.print("\nIs your birthday in Set2?\n");
System.out.print(set2);
System.out.print("\nEnter 0 for No and 1 for Yes: ");
answer =
input.nextInt();
if (answer
== 1)
day += 2;
// Prompt
the user to answer questions
System.out.print("Is your birthday in Set3?\n");
System.out.print(set3);
System.out.print("\nEnter 0 for No and 1 for Yes: ");
answer =
input.nextInt();
if (answer
== 1)
day += 4;
// Prompt
the user to answer questions
System.out.print("\nIs your birthday in Set4?\n");
System.out.print(set4);
System.out.print("\nEnter 0 for No and 1 for Yes: ");
answer =
input.nextInt();
if (answer
== 1)
day += 8;
// Prompt
the user to answer questions
System.out.print("\nIs your birthday in Set5?\n");
System.out.print(set5);
System.out.print("\nEnter 0 for No and 1 for Yes: ");
answer =
input.nextInt();
if (answer
== 1)
day += 16;
System.out.println("\nYour birthday is " + day +
"!");
}
}
-------------------------------------------
GuessBirthdayUsingConfirmationDialog.java
File name : GuessBirthdayUsingConfirmationDialog.java
import javax.swing.JOptionPane;
public class GuessBirthdayUsingConfirmationDialog {
public static
void main(String[] args) {
String set1
=
"
1 3
5 7\n" +
" 9
11 13 15\n" +
"17
19 21 23\n" +
"25
27 29 31";
String set2
=
"
2 3
6 7\n" +
"10
11 14 15\n" +
"18
19 22 23\n" +
"26
27 30 31";
String set3
=
"
4 5
6 7\n" +
"12
13 14 15\n" +
"20
21 22 23\n" +
"28
29 30 31";
String set4
=
"
8 9 10 11\n" +
"12
13 14 15\n" +
"24
25 26 27\n" +
"28
29 30 31";
String set5
=
"16
17 18 19\n" +
"20
21 22 23\n" +
"24
25 26 27\n" +
"28
29 30 31";
int day = 0;
// Prompt
the user to answer questions
int answer =
JOptionPane.showConfirmDialog(null,
"Is
your birthday in these numbers?\n" + set1);
if (answer
== JOptionPane.YES_OPTION)
day += 1;
answer =
JOptionPane.showConfirmDialog(null,
"Is
your birthday in these numbers?\n" + set2);
if (answer
== JOptionPane.YES_OPTION)
day += 2;
answer =
JOptionPane.showConfirmDialog(null,
"Is
your birthday in these numbers?\n" + set3);
if (answer
== JOptionPane.YES_OPTION)
day += 4;
answer =
JOptionPane.showConfirmDialog(null,
"Is
your birthday in these numbers?\n" + set4);
if (answer
== JOptionPane.YES_OPTION)
day += 8;
answer =
JOptionPane.showConfirmDialog(null,
"Is
your birthday in these numbers?\n" + set5);
if (answer
== JOptionPane.YES_OPTION)
day += 16;
JOptionPane.showMessageDialog(null, "Your birthday is " +
day +
"!");
}
}
