Java 中的 ArrayDeque remove()方法
原文:https://www . geesforgeks . org/arraydeque-remove-method-in-Java/
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The Java.util.ArrayDeque.remove() method is used to remove the element present at the head of the Deque.
语法:
java Array_Deque.remove()参数:该方法不取任何参数。
返回值:这个方法返回出现在德格头部的元素。
异常:方法抛出 NoSuchElementException 如果 deque 为空则抛出。
下面的程序说明了 Java.util.ArrayDeque.remove()方法:
程序 1:
```java // Java code to illustrate remove() import java.util.*;
public class ArrayDequeDemo { public static void main(String args[]) { // Creating an empty ArrayDeque Deque de_que = new ArrayDeque();
// 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 remove() method de_que.remove(); de_que.remove();
// Displaying the ArrayDeque after removal System.out.println("ArrayDeque after removing " + "elements: " + de_que); } } ```
Output:
```java Initial ArrayDeque: [Welcome, To, Geeks, For, Geeks] ArrayDeque after removing elements: [Geeks, For, Geeks]
```
程序 2:
```java // Java code to illustrate remove() import java.util.*;
public class ArrayDequeDemo { public static void main(String args[]) { // Creating an empty ArrayDeque Deque de_que = new ArrayDeque();
// 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 remove() method de_que.remove(); de_que.remove();
// Displaying the ArrayDeque after removal System.out.println("ArrayDeque after removing " + "elements: " + de_que); } } ```
Output:
```java Initial ArrayDeque: [10, 15, 30, 20, 5] ArrayDeque after removing elements: [30, 20, 5]
```
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The Java.util.ArrayDeque.remove(Object) method is used to remove a particular element from an ArrayDeque.
语法:
java Priority_Queue.remove(*Object O*)参数:参数 O 属于数组类型，指定要从数组中删除的元素。
返回值:如果指定的元素出现在 Deque 中，该方法返回真，否则返回假。
下面的程序说明了 Java.util.ArrayDeque.remove()方法:
程序 1:
```java // Java code to illustrate remove() import java.util.*;
public class ArrayDequeDemo { public static void main(String args[]) { // Creating an empty ArrayDeque Deque de_que = new ArrayDeque();
// 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 remove() method de_que.remove("Geeks"); de_que.remove("For"); de_que.remove("Welcome");
// Displaying the ArrayDeque after removal System.out.println("ArrayDeque after removing " + "elements: " + de_que); } } ```
Output:
```java Initial ArrayDeque: [Welcome, To, Geeks, For, Geeks] ArrayDeque after removing elements: [To, Geeks]
```
程序 2:
```java // Java code to illustrate remove() import java.util.*;
public class ArrayDequeDemo { public static void main(String args[]) { // Creating an empty ArrayDeque Deque de_que = new ArrayDeque();
// 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 remove() method de_que.remove(30); de_que.remove(5);
// Displaying the ArrayDeque after removal System.out.println("ArrayDeque after removing " + "elements: " + de_que); } } ```
Output:
```java Initial ArrayDeque: [10, 15, 30, 20, 5] ArrayDeque after removing elements: [10, 15, 20]
```
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