Java 中的 ArrayDeque removelastpoccurrence()方法
原文:https://www . geeksforgeeks . org/arraydeque-removelastpraction-method-in-Java/
java 中的 Java . util . arrayDeque . removelast occurrence(Object)方法用于从这个 deque 中移除特定元素的最后一次出现。如果该元素只出现一次,则移除该元素并返回 true。如果没有删除这样的元素,则返回 false。
语法:
Array_Deque.removeLastOccurrence(*Object O*)
参数:该方法取 ArrayDeque 类型的一个参数 O ,该参数是指最后一次出现的元素要被移除。
返回值:如果元素存在于 Deque 中,该方法返回真,否则返回假。
下面的程序说明了 Java . util . Arraydeque . removeLastContract()方法:
程序 1 :
// Java code to illustrate removeLastOccurrence()
import java.util.*;
public class ArrayDequeDemo {
public static void main(String args[])
{
// Creating an empty ArrayDeque
Deque<String> de_que = new ArrayDeque<String>();
// Use add() method to add elements into the Deque
de_que.add("Welcome");
de_que.add("To");
de_que.add("Geeks");
de_que.add("For");
de_que.add("Geeks");
// Displaying the ArrayDeque
System.out.println("Initial ArrayDeque: " + de_que);
// Removing elements using removeLastOccurrence() method
de_que.removeLastOccurrence("Geeks");
de_que.removeLastOccurrence("For");
// Displaying the ArrayDeque after removal
System.out.println("ArrayDeque after removing "
+ "elements: " + de_que);
}
}
Output:
Initial ArrayDeque: [Welcome, To, Geeks, For, Geeks]
ArrayDeque after removing elements: [Welcome, To, Geeks]
程序 2:
// Java code to illustrate removeLastOccurrence()
import java.util.*;
public class ArrayDequeDemo {
public static void main(String args[])
{
// Creating an empty ArrayDeque
Deque<Integer> de_que = new ArrayDeque<Integer>();
// Use add() method to add elements into the Deque
de_que.add(10);
de_que.add(15);
de_que.add(30);
de_que.add(20);
de_que.add(5);
// Displaying the ArrayDeque
System.out.println("Initial ArrayDeque: " + de_que);
// Removing elements using removeLastOccurrence() method
de_que.removeLastOccurrence(30);
de_que.removeLastOccurrence(5);
// Displaying the ArrayDeque after removal
System.out.println("ArrayDeque after removing "
+ "elements: " + de_que);
}
}
Output:
Initial ArrayDeque: [10, 15, 30, 20, 5]
ArrayDeque after removing elements: [10, 15, 20]
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