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Java ArrayDeque removeLast()用法及代碼示例


Java.util.ArrayDeque.removeLast()方法用於刪除Deque的最後一個元素。

用法:

Array_Deque.removeLast()

參數:該方法不帶任何參數。


返回值:刪除後,此方法返回雙端隊列的最後一個元素。

異常:如果雙端隊列為空,則此方法將引發NoSuchElementException。

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

示例1:

// Java code to illustrate removeLast() 
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 removeLast() method 
        de_que.removeLast(); 
        de_que.removeLast(); 
        de_que.removeLast(); 
  
        // 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: [Welcome, To]

示例2:

// Java code to illustrate removeLast() 
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 removeLast() method 
        de_que.removeLast(); 
        de_que.removeLast(); 
  
        // 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, 30]


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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 removeLast() 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。