如果我有一個具有以下定義的串列節點
class ListNode {
public $val = 0;
public $next = null;
function __construct($val = 0, $next = null) {
$this->val = $val;
$this->next = $next;
}
}
如何將元素添加到串列節點的末尾，從而通過互動添加 int[i] 元素？
uj5u.com熱心網友回復：
class ListNode {
public int $val = 0;
public ?ListNode $next = null;
function __construct(?int $val = 0, ?ListNode $next = null) {
$this->val = $val;
$this->next = $next;
}
function appendToListEnd(int $val) {
if ($this->next == null) {
$this->next = new ListNode($val);
} else {
$temp = $this->next;
while ($temp->next != null) {
$temp = $temp->next;
}
$temp->next = new ListNode($val);
}
}
}
$arr = [ 1, 2, 3, 4 ];
$listHead = new ListNode($arr[0]);
for ($i = 1; $i < count($arr); $i ) {
$listHead->appendToListEnd($arr[$i]);
}
print_r($listHead);
$listHead->appendToListEnd(5);
print_r($listHead);
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