Use the template to implement this function

import java.io.BufferedReader; import java.io.FileReader; import java.util.ArrayList;

import static org.junit.Assert.*;

public class Q2 {

// Return all sums that can be formed from subsets of elements in arr public static ArrayList allSums( ArrayList arr ) { return null; } public static void main(String[] args) { //https://www.baeldung.com/java-file-to-arraylist ArrayList result = new ArrayList();//= Files.readAllLines(Paths.get("nums.txt")); try { BufferedReader br = new BufferedReader(new FileReader("nums.txt")); while (br.ready()) { result.add(Integer.getInteger(br.readLine())); } } catch (Exception e) { System.out.println(e.getMessage()); } ArrayList sums = allSums(result); System.out.println("Testing..."); assertEquals(sums.size(), 8); assertEquals(sums.contains(0), true); assertEquals(sums.contains(1), true); assertEquals(sums.contains(2), true); assertEquals(sums.contains(4), true); assertEquals(sums.contains(3), true); assertEquals(sums.contains(5), true); assertEquals(sums.contains(6), true); assertEquals(sums.contains(7), true); System.out.println("Success!"); } }

Implement a function that reads numbers in from a file with one number per line and outputs all the possible sums that can be formed by subsets of the numbers. For instance, if the numbers in the file are 124, then the output would be 0, 1, 2,4,3,5,6,7. Note that is in the output because it uses none of the numbers, while 7 is the sum of all of the numbers. // Return all sums that can be formed from subsets of elements in arr public static ArrayList allsums( ArrayList arr) {...} Implement a function that reads numbers in from a file with one number per line and outputs all the possible sums that can be formed by subsets of the numbers. For instance, if the numbers in the file are 124, then the output would be 0, 1, 2,4,3,5,6,7. Note that is in the output because it uses none of the numbers, while 7 is the sum of all of the numbers. // Return all sums that can be formed from subsets of elements in arr public static ArrayList allsums( ArrayList arr) {...}