Java8 Stream流

https://blog.csdn.net/weixin_41938314/article/details/119979830

• 匹配查找
  [https://blog.csdn.net/dalinsi/article/details/78136031](https://blog.csdn.net/dalinsi/article/details/78136031

• int[]转List
  https://blog.csdn.net/krrmjssf/article/details/122657891

  List<Integer> = Arrays.stream(nums).boxed().collect(Collectors.toList());