Sum_Equals_New

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Arrays;
import java.util.List;
import java.util.stream.Collectors;

public class Adjacent_Numbers {
    public static void main(String[] args) throws IOException {

        BufferedReader reader =
                new BufferedReader(
                        new InputStreamReader(System.in));

        System.out.println("Enter some numbers: ");

        List<Integer> numbers = Arrays.stream(reader.readLine().split("\\s+"))
                .map(Integer :: parseInt).collect(Collectors.toList());
        System.out.println(numbers);

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

       }
       System.out.println(numbers);