Java ArrayDeque remove()用法及代碼示例

Java.util.ArrayDeque.remove()方法用於刪除Deque頭部的元素。

用法:

Array_Deque.remove()

參數：該方法不帶任何參數。

返回值：此方法返回存在於雙端隊列頭部的元素。

異常：如果雙端隊列為空，則拋出NoSuchElementException異常。

下麵的程序演示了Java.util.ArrayDeque.remove()方法：

示例1:

// Java code to illustrate remove() 
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 remove() method 
        de_que.remove(); 
        de_que.remove(); 
  
        // Displaying the ArrayDeque after removal 
        System.out.println("ArrayDeque after removing "
                           + "elements: " + de_que); 
    } 
}

輸出：

Initial ArrayDeque: [Welcome, To, Geeks, For, Geeks]
ArrayDeque after removing elements: [Geeks, For, Geeks]

示例2:

// Java code to illustrate remove() 
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 remove() method 
        de_que.remove(); 
        de_que.remove(); 
  
        // Displaying the ArrayDeque after removal 
        System.out.println("ArrayDeque after removing "
                           + "elements: " + de_que); 
    } 
}

輸出：

Initial ArrayDeque: [10, 15, 30, 20, 5]
ArrayDeque after removing elements: [30, 20, 5]

Java.util.ArrayDeque.remove(Object)方法用於從ArrayDeque中刪除特定元素。

用法:

Priority_Queue.remove(Object O)

參數：參數O跟ArrayDeque的元素類型一致，並指定要從ArrayDeque中刪除的元素。

返回值：如果指定的元素存在於雙端隊列中，則此方法返回True，否則返回False。

下麵的程序演示了Java.util.ArrayDeque.remove()方法：

示例1:

// Java code to illustrate remove() 
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 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); 
    } 
}

輸出：

Initial ArrayDeque: [Welcome, To, Geeks, For, Geeks]
ArrayDeque after removing elements: [To, Geeks]

示例2:

// Java code to illustrate remove() 
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 remove() method 
        de_que.remove(30); 
        de_que.remove(5); 
  
        // Displaying the ArrayDeque after removal 
        System.out.println("ArrayDeque after removing "
                           + "elements: " + de_que); 
    } 
}

輸出：

Initial ArrayDeque: [10, 15, 30, 20, 5]
ArrayDeque after removing elements: [10, 15, 20]

相關用法

注：本文由純淨天空篩選整理自Chinmoy Lenka大神的英文原創作品 ArrayDeque remove() Method in Java。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。