How to check if a number is lead number (sum of even digits is equal to the sum of odd digits) in Java

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public class LeadNumberChecker {

    // Function to check if a number is a lead number
    public static boolean isLeadNumber(int num) {
        int evenSum = 0, oddSum = 0;

        while (num > 0) {
            int digit = num % 10; // Extract the last digit

            if (digit % 2 == 0) {
                evenSum += digit; // Add to even sum if digit is even
            } else {
                oddSum += digit; // Add to odd sum if digit is odd
            }

            num /= 10; // Remove the last digit
        }

        return evenSum == oddSum; // Check if sums are equal
    }

    public static void main(String[] args) {
        int number = 615341;

        if (isLeadNumber(number)) {
            System.out.println(number + " is a lead number.");
        } else {
            System.out.println(number + " is not a lead number.");
        }
    }
}



/*
run:

615341 is a lead number.

*/

 



answered Sep 16, 2025 by avibootz
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