Java8流如何从后向前遍历元素？[duplicate]

Question

例如：

List<Integer> list = Lists.newArrayList(3, 1, 2)
for(int i = list.size() - 1; i>=0; i--) {
    System.out.println(list.get(i));
}

如何在Java8 Stream中实现上述代码？

Answer 1

   int[] array = {3, 1, 2};
   IntStream.rangeClosed(1, array.length)
     .mapToObj(i -> array[array.length - i])
     .forEach(System.out::println);

Answer 2

如果像这样的东西：

List<Integer> list = Arrays.asList(3, 1, 2);
    Collections.reverse(list);
    list.forEach(System.out::println);

Answer 3

你可以试试下面这段代码-

ListIterator<Integer> iterator = list.listIterator(list.size());
Stream.generate(iterator::previous)
  .limit(list.size())
  .forEach(System.out::println);