Check whether the sum of alternate digit of a number is palindrome or not.
In this section, you will learn how to check whether the sum of alternate digit of a number is palindrome or not.
In this section, you will learn how to check whether the sum of alternate digit of a number is palindrome or not.Check whether the sum of alternate digit of a number is palindrome or not.
In the previous section, we have discussed about the number palindromes. Here we are going to check whether the sum of the alternate digit of a number entered by the user is palindrome or not. So, firstly we have to find the sum of the alternate digits of number (like if a number is 23456, the sum of alternate digit of this number be 2+4+6 i.e 12) and then check whether this sum is palindrome or not.
Here is the code:
import java.math.*;
import java.util.*;
class CheckSumIsPalindrome {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
System.out.print("Enter Number: ");
BigInteger bi = input.nextBigInteger();
int num = 0;
String strSum = bi.toString();
for (int i = 0; i < strSum.length(); i += 2) {
char ch = strSum.charAt(i);
int n = Integer.parseInt(Character.toString(ch));
num += n;
}
System.out.println("Sum of Alternate digits is: " + num);
int n = num;
int reversedNumber = 0;
for (int i = 0; i <= num; i++) {
int r = num % 10;
num = num / 10;
reversedNumber = reversedNumber * 10 + r;
i = 0;
}
if (n == reversedNumber) {
System.out.print("Number is palindrome!");
} else {
System.out.println("Number is not palindrome!");
}
}
}
