mingliangguo · November 29, 2020 02:23
diff --git a/lambda.java b/lambda.java
 int[] nums = new int[]{3, 5, 9, 2, 6};
 nums = IntStream.of(nums).boxed().sorted(Comparator.reverseOrder()).mapToInt(i -> i).toArray();

 List<Integer> list = new ArrayList<>();
 int[] arr = list.stream().mapToInt(i -> i).toArray();

 // convert array to string
 Arrays.toString(new int[]{1, 2, 3});
	int[] nums = new int[]{3, 5, 9, 2, 6};
	nums = IntStream.of(nums).boxed().sorted(Comparator.reverseOrder()).mapToInt(i -> i).toArray();

	List<Integer> list = new ArrayList<>();
	int[] arr = list.stream().mapToInt(i -> i).toArray();

	// convert array to string
	Arrays.toString(new int[]{1, 2, 3});