Question

Create a static method with the appropriate inputs and outputs. Call each of them in the main method.

Write a method named allMultiples() which takes in a List of integers and an int. The method returns a new List of integers which contains all of the numbers from the input list which are multiples of the given int. For example, if the List is [1, 25, 2, 5, 30, 19, 57, 2, 25] and 5 was provided, the new list should contain [25, 5, 30, 25].

Please do this in Java.

Answer 1

import java.util.ArrayList;
import java.util.List;

public class AllMultiplesList {
    public static List<Integer> allMultiples(List<Integer> list, int n){
        List<Integer> result = new ArrayList<>();
        for(int i = 0;i<list.size();i++){
            if(list.get(i)%n==0){
                result.add(list.get(i));
            }
        }
        return result;
    }

    public static void main(String[] args) {
        List<Integer> list = new ArrayList<>();
        list.add(1);
        list.add(25);
        list.add(2);
        list.add(5);
        list.add(30);
        list.add(19);
        list.add(57);
        list.add(2);
        list.add(25);

        List<Integer> result = allMultiples(list, 5);
        System.out.println(result);
    }
}

[25, 5, 30, 25]