Zip and Add Two Lists

/*
 * Problem : Zip and add.
 * Input   : n, a, m, b.
 * Output  : Pair sums.
 * Approach: Map over pairs.
 * Time    : O(min(n, m))
 * Space   : O(min(n, m))
 * Java    : 8 or newer.
 */
import java.util.Scanner;

public class Main {
    // This method solves the task. It receives the input and returns the answer.
    static String solve(int[] a, int[] b) {
        // Step 1: A stream of the positions 0 .. shorter length - 1. Each position becomes the sum of the two numbers.
        int length = Math.min(a.length, b.length);
        return java.util.stream.IntStream.range(0, length)
            .mapToObj(i -> String.valueOf((long) a[i] + b[i]))
            .collect(java.util.stream.Collectors.joining(" "));
    }

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int size = scanner.nextInt();
        int[] a = new int[size];
        for (int i = 0; i < size; i++) {
            a[i] = scanner.nextInt();
        }
        int sizeB = scanner.nextInt();
        int[] b = new int[sizeB];
        for (int i = 0; i < sizeB; i++) {
            b[i] = scanner.nextInt();
        }
        System.out.println(solve(a, b));
    }
}