Java Java.util.ArrayDeque.remove(Object)用法及代碼示例

描述

這個java.util.ArrayDeque.remove(Object)方法刪除指定的單個實例element由此deque。

聲明

以下是聲明java.util.ArrayDeque.remove(o)方法

public boolean remove(Object o)

參數

oâˆ' 要從此雙端隊列中刪除的元素(如果存在)

返回值

該方法返回true如果此雙端隊列包含指定的元素。

異常

NA

示例

下麵的例子展示了 java.util.ArrayDeque.remove(o) 方法的用法。

package com.tutorialspoint;

import java.util.ArrayDeque;
import java.util.Deque;

public class ArrayDequeDemo {
   public static void main(String[] args) {
      
      // create an empty array deque with an initial capacity
      Deque<Integer> deque = new ArrayDeque<Integer>(8);

      // use add() method to add elements in the deque
      deque.add(25);
      deque.add(30);
      deque.add(20);
      deque.add(40);        

      // printing all the elements available in deque
      for (Integer number:deque) {
         System.out.println("Number = " + number);
      }

      // deque contains element 30, returns true
      boolean retval = deque.remove(30); 
      if (retval == true) {
         System.out.println("element 30 is removed from the deque");
      } else {
         System.out.println("element 30 is not contained in the deque");
      }
         
      // deque does not contain element 15, returns false
      boolean returnval = deque.remove(15); 
      if (returnval == true) {
         System.out.println("element 15 is removed from the deque");
      } else {
         System.out.println("element 15 is not contained in the deque");  
      }

      // printing remaining elements
      for (Integer number:deque) {
         System.out.println("Number = " + number);
      }  
   }  
}

讓我們編譯並運行上麵的程序，這將產生以下結果——

Number = 25
Number = 30
Number = 20
Number = 40
element 30 is removed from the deque
element 15 is not contained in the deque
Number = 25
Number = 20
Number = 40