algorithm Algorithm and data structure implementation in Java/Kotlin. data structure list ArrayList SinglyLinkedList LinkedList CircleSinglyLinkedList CircleLinkedList stack Stack queue Queue Deque CircleQueue CircleDeque PriorityQueue tree BST AVLTree B RBTree Trie set ListSet TreeSet HashSet LinkedHashSet map TreeMap HashMap LinkedHashMap heap BinaryHeap algorithm Sort BubbleSort SelectionSort HeapSort InsertionSort