The article covers the basics of using the Arrays.sort() method in Java to sort both primitive and non-primitive data types. However, there are some improvements that can be made to the article to make it more comprehensive and concise.
Firstly, it's essential to emphasize the time complexity of the Arrays.sort() method. It uses the Dual-Pivot Quicksort algorithm that provides an average case time complexity of O(n log n) and a worst-case time complexity of O(n^2). This can be important in understanding the performance of the method when dealing with large arrays.
Next, it's necessary to explain how the Arrays.sort() method sorts arrays of different data types. The method uses the natural order of the data type to sort arrays of primitive types like int, long, double, etc. This means that the elements are sorted in non-decreasing order by default.
On the other hand, arrays of non-primitive types like objects, strings, etc., use the Comparable interface to determine the natural order of the elements. The Comparable interface has only one method, compareTo(), which compares two objects to determine their order. If an array contains objects of a custom class, it's essential to implement the Comparable interface and override the compareTo() method to determine the order in which the elements are sorted.
In cases where the natural order is not suitable, the Arrays.sort() method also provides an overloaded version that accepts a Comparator object. A Comparator object is a custom implementation of the compare() method that compares two objects and returns an integer value that indicates their order. In this way, it's possible to sort arrays of non-primitive data types based on any custom criteria.
Finally, the article can provide some examples of using the Arrays.sort() method to sort arrays of different data types, including primitive and non-primitive data types, and using the Comparator interface to sort custom objects based on specific criteria. The examples should be clear and concise, highlighting the key features of using the Arrays.sort() method in each scenario.
Overall, by providing a more comprehensive and concise overview of using the Arrays.sort() method in Java, readers can better understand the various ways they can use the method to sort arrays of different data types.