leetcode\DeleteNodeInALinkedList::deleteNode()

Complexity

Conditions	4
Paths	6

Size

Total Lines	17
Code Lines	10

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

<?php
    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.

    }