Algorithms / Data Structures Big O Notation: O(n), O(1), and O(n²) O(n) O(1) and O(n²) Data Structures: Array & Linked List Array Linked List Data Structures: Stack & Queue Stack Queue Data Structures: Hash Table Hash Table (1) Hash Table (2) Data Structures: Binary Heap Binary Heap (1) Binary Heap (2) Data Structures: Binary Search Tree BST (1) BST (2)