Solution.java

import java.util.*;
import java.util.stream.Collectors;

/**
 * Created by Anthony on 12/18/2015.
 */
public class Solution {

    public static void main(String[] args) {
        List<String> numbers = new ArrayList<String>();
        numbers.add("1111");
        numbers.add("22-22");
        numbers.add("33 33");
        List<Integer> numbersMapped = numbers.stream()
                  .map(i -> Arrays.asList(i.replaceAll(" ", "").replaceAll("-", "").split("")).stream()
                          .map(j -> Integer.parseInt(j))
                          .reduce((x, y) -> x+y).get())
                  .collect(Collectors.toList());
        System.out.println(numbersMapped);
        // [4, 8, 12]
    }
}