Program 2: Palindrome Number ID: ID002 Make sure you include this ID as a System
ID: 3733184 • Letter: P
Question
Program 2: Palindrome Number
ID: ID002
Make sure you include this ID as a System.out.println() message at the beginning of your program. This helps us with grading, and is required.
Before beginning this project, make sure to completely read through the instructions, and then draw the flowchart. The flowcharts will be taken up at the beginning of our next Lab.
Write a program that prompts the user to enter a three-digit integer and determines whether it is a palindrome number. A number is a palindrome if it reads the same from right to left, and from left to right. For example, “373” is a palindrome number, but “519” is not.
The pseudocode is provided to you below:
This program will determine whether a number is a palindrome
num <- user input
firstDigit <- num / 100
num <- num % 10
(num now represents the last digit)
if firstDigit equals num, then
display “This was a palindrome”
else
display “This was not a palindrome”
Below is the input and the output we expect from your program. This is to help you know if you are on the right track.
Example input :
373
Example output:
ID002
Enter a palindrome: [integer]
This was a palindrome
Example input :
578
Example output:
ID002
Enter a palindrome: [integer]
This was not a palindrome
Explanation / Answer
ThreeDigitPalindrome.java
import java.util.Scanner;
public class ThreeDigitPalindrome {
public static void main(String[] args) {
System.out.println("ID002");
Scanner scan = new Scanner(System.in);
System.out.println("Enter a 3-digit number:");
int num = scan.nextInt();
int firstDigit = num/100;
num = num % 10;
if(firstDigit==num) {
System.out.println("This was a palindrome");
} else {
System.out.println("This was not a palindrome");
}
}
}
Output:
ID002
Enter a 3-digit number:
373
This was a palindrome
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