java 方法 示例

集合类lastIndexOfSubList()方法 (Collections Class lastIndexOfSubList() method)

• lastIndexOfSubList() method is available in java.util package.

  lastIndexOfSubList()方法在java.util包中可用。

• lastIndexOfSubList() method is used to return the starting index of the last occurrence of the given (dest) list within the given source list (src).

  lastIndexOfSubList()方法用于返回给定源列表( src )中给定( dest )列表最后一次出现的起始索引。

• lastIndexOfSubList() method is a static method, so it is accessible with the class name and if we try to access the method with the class object then we will not get an error.

  lastIndexOfSubList()方法是一个静态方法，因此可以使用类名进行访问，并且如果尝试使用类对象访问该方法，则不会收到错误。

• lastIndexOfSubList() method does not throw an exception at the time of returning the index of the last occurrence of the given List (dest).

  在返回给定List( dest )的最后一次出现的索引时， lastIndexOfSubList()方法不会引发异常。

Syntax:

句法：

    public static int lastIndexOfSubList(List src, List dest);

Parameter(s):

参数：

• List src – represents the source list in which to filter the last occurrence of the given list(dest).

  List src –表示源列表，在其中过滤给定列表( dest )的最后一次出现。

• List dest – represents the targeted list(dest) to filter sublist of the given source list(src).

  列表目标 –表示要过滤给定源列表( src )的子列表的目标列表( dest )。

Return value:

返回值：

The return type of this method is int, it returns starting index of the last occurrence of the given sublist (dest) within the given source list(src) otherwise it returns -1 when no search found or list empty.

此方法的返回类型为int ，它返回给定源列表( src )中给定子列表( dest )的最后一次出现的起始索引，否则，当找不到搜索或列表为空时返回-1。

Example:

例：

// Java program is to demonstrate the example
// of int lastIndexOfSubList() of Collections
import java.util.*;
public class LastIndexOfSubList {public static void main(String args[]) {// Instantiate a LinkedList
List src_l = new LinkedList();
List dest_l = new LinkedList();
// By using add() method is to
// add elements in linked list src_l
src_l.add(10);
src_l.add(20);
src_l.add(30);
src_l.add(40);
src_l.add(50);
// By using add() method is to
// add elements in linked list dest_l
dest_l.add(40);
dest_l.add(50);
// Display LinkedList
System.out.println("link_l: " + src_l);
System.out.println("dest_l: " + dest_l);
System.out.println();
// By using lastIndexOfSubList() method is to
// return the starting index of last occurrence
// of dest_l in src_l
int index = Collections.lastIndexOfSubList(src_l, dest_l);
//Display index
System.out.println("Collections.lastIndexOfSubList(src_l,dest_l): " + index);
}
}

Output

输出量

link_l: [10, 20, 30, 40, 50]
dest_l: [40, 50]Collections.lastIndexOfSubList(src_l,dest_l): 3

翻译自: https://www.includehelp.com/java/collections-lastindexofsublist-method-with-example.aspx

java 方法 示例