Using Stream api Java to merge elements of two collections with each other

Question:

There are 2 collections: c1 = Arrays.asList("A", "B", "C") and c2 = Arrays.asList("1", "2", "3") . Tell me how to make a collection {"A1", "B2", "C3"} using the Stream API in Java in 1 line?

Answer:

For some reason, there is no zip operation in standard streams, so you have to resort to debauchery like

IntStream
  .range(0, Math.min(c1.size(), c2.size()))
  .mapToObj(i -> c1.get(i) + c2.get(i))
  .forEach(System.out::println);

But zip is in Guava

Streams
  .zip(c1.stream(), c2.stream(), (x, y) -> x + y)
  .forEach(System.out::println);

And in StreamEx

StreamEx.of(c1)
        .zipWith(StreamEx.of(c2), (x, y) -> x + y)
        .forEach(System.out::println);