Java中的 LinkedList removeLastOccurrence() 方法示例

Java.util.concurrent.LinkedList.removeLastOccurrence()方法是Java中的一个内置方法，它接受一个参数并删除该元素在列表中的最后一次出现。因此，如果该元素不存在于列表中，则它保持不变。

句法：

public boolean removeLastOccurrence(Object o)

参数：该函数接受一个对象elem作为参数，该参数表示要从列表中删除其最后一次出现的对象。

返回值：如果列表中存在elem ，则该函数返回true ，否则返回false 。

下面的程序说明了removeLastOccurrence()方法的使用：

// Java program to demonstrate removeLastOccurrence()
// method of LinkedList
  
import java.util.*;
  
class LinkedListDemo {
    public static void main(String[] args)
    {
        LinkedList list
            = new LinkedList();
  
        list.add("GFG");
        list.add("Geeks");
        list.add("Gfg");
        list.add("gfg");
        list.add("Geeks");
  
        // Displaying the existing LinkedList
        System.out.println("LinkedList: "
                           + list);
  
        // Remove last occurrence of  element
        list.removeLastOccurrence("Geeks");
  
        System.out.println("Removed last occurrence"
                           + " of 'Geeks' from the list");
  
        // Displaying the modified LinkedList
        System.out.println("LinkedList: "
                           + list);
    }
}

输出：

LinkedList: [GFG, Geeks, Gfg, gfg, Geeks]
Removed last occurrence of 'Geeks' from the list
LinkedList: [GFG, Geeks, Gfg, gfg]

方案二：

// Java program to demonstrate removeLastOccurrence()
// method of LinkedList
  
import java.util.*;
  
class LinkedListDemo {
    public static void main(String[] args)
    {
        LinkedList
            list = new LinkedList();
  
        list.add(12);
        list.add(280);
        list.add(12);
        list.add(1050);
        list.add(12);
  
        // Displaying the existing LinkedList
        System.out.println("LinkedList: "
                           + list);
  
        // Remove last occurrence of  element
        list.removeLastOccurrence(12);
  
        System.out.println("Removed last occurrence"
                           + " of '12' from the list");
  
        // Displaying the modified LinkedList
        System.out.println("LinkedList: "
                           + list);
    }
}

输出：

LinkedList: [12, 280, 12, 1050, 12]
Removed last occurrence of '12' from the list
LinkedList: [12, 280, 12, 1050]