What is an easy way to combine two arrays in java?

Question

Java

Super-simple question, but even some stupid decisions climb into my head. The bottom line is this: the function receives two arrays, you need to add each cell of one array with a cell from another array. But at the same time, I don’t know which array will be longer in order to iterate over the indices in a loop. What index to count?

Answer 1

I use vavr streams :

public static void main(String[] args) {
        var s1 = Stream.of(2, 1, 3); // Stream < Integer >

        var s2 = s1.zip(List.of(7, 8, 9));  // Stream <Tuple2< Integer, Integer >>

        var integers = s2.map(tuple2 -> tuple2._1 + tuple2._2).collect(Collectors.toList());

        integers.forEach(System.out::println);
    }

If the sheets are of different sizes, the remaining part is not included in the calculations.

Answer 2

Math.max(first array, second array)

Answer 3

public static void main(String[] args) {
        var s1 = Stream.of(2, 1, 3); // Stream < Integer >

        var s2 = s1.zip(List.of(7, 8, 9));  // Stream <Tuple2< Integer, Integer >>

        var integers = s2.map(tuple2 -> tuple2._1 + tuple2._2).collect(Collectors.toList());

        integers.forEach(System.out::println);
math.max(s1,s2);
    }