SumAdjacentEqualNumbers_Lists_Lab

package feb19_Lists_Lab;

import java.text.DecimalFormat;
import java.util.Arrays;
import java.util.List;
import java.util.Scanner;
import java.util.stream.Collectors;

public class SumAdjacentEqualNumbers {
    public static void main(String[] args) {
        @SuppressWarnings("resource")

        Scanner sc = new Scanner(System.in);

        List<Double> nums = Arrays.stream(sc.nextLine().split("\\s+")).map(Double::parseDouble)
                .collect(Collectors.toList());

        for (int i = 0; i < nums.size() - 1; i++) {
            if (nums.get(i).equals(nums.get(i + 1))) {
                nums.set(i, (nums.get(i) + nums.get(i + 1)));
                nums.remove(nums.get(i + 1));
                i = -1;
            }
        }

        join(nums, " ");
    }

    public static void join(List<Double> nums, String delimeter) {
        DecimalFormat df = new DecimalFormat("#.###");
        String output = "";
        for (double num : nums) {
            String formatted = df.format(num);
            output += formatted + delimeter;
        }
        System.out.println(output);
    }
}