algorithm/Week_01/id_12/LeetCode_83_12.php at master · feixiangcode/algorithm · GitHub

22 lines (21 loc) · 552 Bytes

/**

* Definition for a singly-linked list.

* class ListNode {

* public $val = 0;

* public $next = null;

* function __construct($val) { $this->val = $val; }

* }

class Solution {

public function deleteDuplicates($headNode) {

$current = $headNode;

while($current->next !=null){

if($current->val == $current->next->val ){

$current->next = $current->next->next;

}else{

$current = $current->next;

}

return $headNode;

}

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