SplDoublyLinkedList::push()函數是PHP中的內置函數,用於在雙向鏈表的末尾推送元素。
用法:
void SplDoublyLinkedList::push( $value )
參數:該函數接受單個參數$value,該參數包含一個元素以將其推入雙向鏈接列表的末尾。
返回值:它不返回任何值。
以下示例程序旨在說明PHP中的SplDoublyLinkedList::push()函數:
程序1:
<?php
// Declare an empty SplDoublyLinkedList
$list = new \SplDoublyLinkedList();
// Use SplDoublyLinkedList::push() function to
// add elements to the SplDoublyLinkedList
$list->push(1);
$list->push(2);
$list->push(3);
$list->push(8);
$list->push(5);
// Display the elements of doubly linked list
var_dump($list);
?>
輸出:
object(SplDoublyLinkedList)#1 (2) { ["flags":"SplDoublyLinkedList":private]=> int(0) ["dllist":"SplDoublyLinkedList":private]=> array(5) { [0]=> int(1) [1]=> int(2) [2]=> int(3) [3]=> int(8) [4]=> int(5) } }
程序2:
<?php
// Declare an empty SplDoublyLinkedList
$list = new \SplDoublyLinkedList();
// Use SplDoublyLinkedList::push() function to
// add elements to the SplDoublyLinkedList
$list->push("Welcome");
$list->push("to");
$list->push("GeeksforGeeks");
$list->push(5);
// Display the elements of doubly linked list
print_r($list);
?>
輸出:
SplDoublyLinkedList Object ( [flags:SplDoublyLinkedList:private] => 0 [dllist:SplDoublyLinkedList:private] => Array ( [0] => Welcome [1] => to [2] => GeeksforGeeks [3] => 5 ) )
參考: https://www.php.net/manual/en/spldoublylinkedlist.push.php
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