在java中反向排序子数组

Question

My goal is to convert this Arrays.sort(nums, j+1, nums.length) into a reverse sort. The only reverse sort information I can find doesn't seem to have the ability to sort a subarray.

And this gives me an error Arrays.sort(nums, j+1, nums.length, Collections.reverseOrder());

Answer 1

由于Collections.reverseOrder（）方法仅适用于引用类型，我的建议是你的“nums”应该保存引用类型，如Integer，Double ......或者如果你定义了自己的类，请确保你的类实现了Comparable接口