leetcode\DeleteNodeInALinkedList

Complexity

Total Complexity

4

Size/Duplication

Total Lines	19
Duplicated Lines	0 %

Importance

Changes	1
Bugs	0	Features	0

1 Method

Rating	Name	Duplication	Size	Complexity
A	deleteNode()	0	17	4

<?php

declare(strict_types=1);

namespace leetcode;

use leetcode\util\ListNode;

class DeleteNodeInALinkedList
{
    public static function deleteNode(ListNode $head, int $value): ListNode
    {
        if ($head->val === $value) {
            $head = $head->next;
        }

        $prev = $curr = $head;
        while ($curr) {
            if ($curr->val === $value) {
                $prev->next = $curr->next;
            } else {
                $prev = $curr;
            }
            $curr = $curr->next;
        }

        return $head;

The expression return $head could return the type null which is incompatible with the type-hinted return leetcode\util\ListNode. Consider adding an additional type-check to rule them out.

    }
}