$queue = array(); array_push($queue, 'apple'); array_push($queue, 'banana'); array_push($queue, 'cherry');
echo array_shift($queue); // apple echo array_shift($queue); // banana A linked list is a data structure in which elements are stored as separate objects, and each element points to the next node in the sequence. PHP 7 provides a SplLinkedList class that can be used to implement linked lists. Php 7 Data Structures And Algorithms Pdf Free Download -BEST
function bfs($graph, $start) { $visited = array(); $queue = array($start); while (!empty($queue)) { $node = array_shift($queue); if (!in_array($node, $visited)) { $visited[] = $node; foreach ($graph[$node] as $neighbor) { if (!in_array($neighbor, $visited)) { $queue[] = $neighbor; } } } } return $visited; } In PHP 7, queues can be implemented using arrays
echo array_pop($stack); // cherry echo array_pop($stack); // banana A queue is a First-In-First-Out (FIFO) data structure that allows elements to be added and removed. In PHP 7, queues can be implemented using arrays. In PHP 7