ArrayList.sort
时间: 2024-05-15 08:16:21 浏览: 106
arrayList排序
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(ArrayList is a class in Java that represents a resizable array and provides methods to manipulate the array. sort() is a method of the ArrayList class that sorts the elements of the ArrayList in ascending order.)
The syntax for using the sort() method of ArrayList in Java is:
```
ArrayList<T> list = new ArrayList<T>();
// add elements to the list
list.add(element1);
list.add(element2);
.
.
.
list.add(elementN);
// sort the elements of the list
Collections.sort(list);
```
Here, T represents the type of elements in the ArrayList.
The sort() method uses the natural ordering of the elements, which means it sorts the elements in ascending order based on their values. If the elements in the ArrayList are of a custom class, then the class must implement the Comparable interface and override the compareTo() method to define the custom ordering.
The sort() method also has an overloaded version that takes a Comparator object as an argument. The Comparator object defines a custom ordering for the elements in the ArrayList.
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