Question

write a program that prints the palindromic numbers (in decimal ) between 0-9999 into the screen.

Note :it should be written in java language.

Answer 1

Answer:

Here is the code, the explanation is in the comments. Please go through them for better understanding of the code. All you need to do is to create a class called PalindromeRange.java, paste the below code and execute. Please do not hesitate to leave a comment if you don't understand the code. Good Luck!!!

PalindromeRange.java

public class PalindromeRange { // Start of class

int isPalindrome(int number) { // check whether the number is palindrome

int originalNumber = number; // preserve the original number passed into the method for later comparison
int reverse = 0; // set reverse to 0 to start with

while(number != 0) { // until the number is not 0, loop in and keep dividing the number
int remainder = number % 10; // do the modulus division on the number
reverse = reverse * 10 + remainder; // keep adding the remainders
number /= 10; // perform regular division
}
if (originalNumber == reverse){ // if the original number and reversed numbers are equal, then return 0
return 0;
}else {
return 1; // if original number and reversed numbers are not equal, return 1
}
}
void range(int startRange, int endRange) // This is the method where you display the palindrome numbers
{
for (int i = startRange; i <= endRange; i++) { // Start a for loop 0-9999
if (isPalindrome(i) == 0){ // call the isPalindrome() in the for loop
System.out.print(i + " "); // Display the palindrome numbers
}
}
}
public static void main(String [] args) { // Start of main()

PalindromeRange palindromeRange = new PalindromeRange(); // Create an obj of PalindromeRange()
palindromeRange.range(0, 9999); // call the method range()

} // End of main()
} // End of class

O/P Screenshot for your reference