From 7afee09c29332bd8424f02e3e3bfae72c4ff1f18 Mon Sep 17 00:00:00 2001 From: Mattias Andrée Date: Wed, 22 Jan 2014 12:24:06 +0100 Subject: add circularly linked lists MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Mattias Andrée --- .../linkedlists/CircularDoublyLinkedList.java | 42 ++++++++++++++++++++++ .../linkedlists/CircularSinglyLinkedList.java | 42 ++++++++++++++++++++++ 2 files changed, 84 insertions(+) create mode 100644 src/datastructures/linkedlists/CircularDoublyLinkedList.java create mode 100644 src/datastructures/linkedlists/CircularSinglyLinkedList.java diff --git a/src/datastructures/linkedlists/CircularDoublyLinkedList.java b/src/datastructures/linkedlists/CircularDoublyLinkedList.java new file mode 100644 index 0000000..5e3ba89 --- /dev/null +++ b/src/datastructures/linkedlists/CircularDoublyLinkedList.java @@ -0,0 +1,42 @@ +/** + * Copyright © 2014 Mattias Andrée (maandree@member.fsf.org) + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see . + */ +package datastructures.linkedlists; + + +/** + * Circular doubly linked list class. A linked list + * is a list constructed from nodes, which hold stored + * values, with references to each other, this is + * usally an ineffective data structure, especially + * on high-level object orientated languages. A + * doublely linked list stores nodes with references + * to both the following node and the previous node. + * Additionally, a circularly linked list, has stores + * no references nodes, you must keep track of at least + * one node yourself; instead the nodes form a circular + * chain, there is no beginning and no end. This + * implemention only implements methods that do not + * require iterating over all nodes for find a + * specific; all other methods' — those that are + * implemented — time complexity is Θ(1). + * + * @param The value stored in the structure + */ +public class CircularDoublyLinkedList +£>export with_head=0 with_tail=0 with_prev=1 +£>gpp -s £ < src/datastructures/linkedlists/template | sed -e '/^[/ ]\*/d' + diff --git a/src/datastructures/linkedlists/CircularSinglyLinkedList.java b/src/datastructures/linkedlists/CircularSinglyLinkedList.java new file mode 100644 index 0000000..0639083 --- /dev/null +++ b/src/datastructures/linkedlists/CircularSinglyLinkedList.java @@ -0,0 +1,42 @@ +/** + * Copyright © 2014 Mattias Andrée (maandree@member.fsf.org) + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see . + */ +package datastructures.linkedlists; + + +/** + * Circular singly linked list class. A linked list + * is a list constructed from nodes, which hold stored + * values, with references to each other, this is + * usally an ineffective data structure, especially + * on high-level object orientated languages. A + * singly linked list only stores nodes with references + * to the following node. Additionally, a circularly + * linked list, has stores no references nodes, you + * must keep track of at least one node yourself; + * instead the nodes form a circular chain, there is + * no beginning and no end. This implemention only + * implements methods that do not require iterating + * over all nodes for find a specific; all other + * methods' — those that are implemented — time + * complexity is Θ(1). + * + * @param The value stored in the structure + */ +public class CircularSinglyLinkedList +£>export with_head=0 with_tail=0 with_prev=0 +£>gpp -s £ < src/datastructures/linkedlists/template | sed -e '/^[/ ]\*/d' + -- cgit v1.2.3-70-g09d2