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GandhiNumber.java

package practice.CodingQues.UnorderedQuestions;

import java.util.Scanner;

public class GandhiNumber {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        long num = scanner.nextInt();
        long temp = num;
        long sum = 0;
        while (temp > 0) {
            sum += Math.pow(temp % 10, 4);
            temp /= 10;
        }
        if (sum == num) System.out.println("It is a Gandhi Number");
        else System.out.println("It is not a Gandhi Number");
    }
}

XandY.java

package practice.CodingQues.UnorderedQuestions;

//Write a code to find out all positive whole numbers x & y satisfying the equation x*y = 130
public class XandYRelation {
    public static void main(String[] args) {
        for (int i = 1; i < 131; i++) {
            for (int j = 1; j < 131; j++) {
                if (i * j == 130) {
                    System.out.println("Res: " + i + "," + j);
                }
            }
        }
    }
}