📜  Java的ArrayDeque clone() 方法

📅  最后修改于: 2022-05-13 01:57:14.337000             🧑  作者: Mango

Java的ArrayDeque clone() 方法

Java.util.ArrayDeque.clone() 方法用于返回此双端队列的浅拷贝。它只是创建双端队列的副本。

句法:

Array_Deque.clone()

参数:该方法不带任何参数。

返回值:该方法仅返回 ArrayDeque 的副本。

下面的程序说明了Java.util.ArrayDeque.clone() 方法:
方案一:



// Java code to illustrate clone()
import java.util.*;
  
public class ArrayDequeDemo {
    public static void main(String args[])
    {
        // Creating an empty ArrayDeque
        ArrayDeque 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("4");
        de_que.add("Geeks");
  
        // Displaying the ArrayDeque
        System.out.println("ArrayDeque: " + de_que);
  
        // Creating another array to copy
        Deque copy_deque = de_que.clone();
  
        // Displaying the copy of Deque
        System.out.println("The cloned array is: " + copy_deque);
    }
}
输出:
ArrayDeque: [Welcome, To, Geeks, 4, Geeks]
The cloned array is: [Welcome, To, Geeks, 4, Geeks]

方案二:

// Java code to illustrate clone()
import java.util.*;
  
public class ArrayDequeDemo {
    public static void main(String args[])
    {
        // Creating an empty ArrayDeque
        ArrayDeque de_que = new ArrayDeque(8);
  
        // 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("ArrayDeque: " + de_que);
  
        // Creating another array to copy
        Deque copy_deque = de_que.clone();
  
        // Displaying the copy of Deque
        System.out.println("The cloned array is: " + copy_deque);
    }
}
输出:
ArrayDeque: [10, 15, 30, 20, 5]
The cloned array is: [10, 15, 30, 20, 5]