public ArrayList<Integer> send(int totalMoney, int count) {}
时间: 2023-12-19 07:07:25 浏览: 26
Sorry, as an AI language model, I cannot provide the implementation of the send() method because there are no details or requirements provided for the functionality of the method. Please provide more information for me to assist you better.
相关问题
ArrayList<Integer>
An ArrayList is a class in Java that provides a dynamic array implementation. It is part of the Java Collections Framework and is used to store a collection of objects. The ArrayList class is a generic class that can be used to store objects of any type.
The ArrayList<Integer> denotes an ArrayList that can only store objects of the Integer type. This is achieved through the use of Java generics, which allows the type of objects stored in a collection to be specified at compile time.
Here's an example of how to create an ArrayList<Integer>:
```
ArrayList<Integer> myList = new ArrayList<Integer>();
```
This creates a new ArrayList that can store objects of the Integer type. The ArrayList is initially empty, and elements can be added using the `add()` method:
```
myList.add(1);
myList.add(2);
myList.add(3);
```
This adds the integers 1, 2, and 3 to the ArrayList. The `size()` method can be used to get the number of elements in the ArrayList:
```
int size = myList.size(); // size is now 3
```
Elements can be retrieved from the ArrayList using the `get()` method:
```
int element = myList.get(0); // element is now 1
```
This retrieves the first element in the ArrayList (at index 0) and stores it in the `element` variable.
public Map<Integer,ArrayList<String>>
这是一个定义了一个返回类型为Map<Integer,ArrayList<String>>的方法的方法签名。它表示这个方法会返回一个Map,这个Map的key是整数类型,value是一个字符串类型的ArrayList。在使用这个方法之前,需要先实例化一个Map对象,并且调用这个方法来填充这个Map。例如:
```
Map<Integer,ArrayList<String>> map = new HashMap<>();
map = yourMethod();
```
其中,yourMethod()就是这个定义了返回类型为Map<Integer,ArrayList<String>>的方法的方法体。