doubly-linked-list

问题 Im having some trouble trying to figure out how to get the pointers right when adding edges to a certain paired vertex. Below is a short idea about how the linked list should look like after Vertexs and Nodes are done being Inputed. How can i keep order on the neighborList as well? Should there be another condition if there is already a vertex edge in that current vertex? Heres the Structured Class im trying to build: class graph{ private: typedef struct node{ char vertex; node * nodeListPtr;

问题 So, I'm not quite sure what is wrong with my toString method. I just keep having an error when I run my tests that it's incorrect. Basically what I am doing is implementing a cyclic DoublyLinkedList data structure. Like a singly linked list, nodes in a doubly linked list have a reference to the next node, but unlike a singly linked list, nodes in a doubly linked list also have a reference to the previous node. Additionally, because the list is "cyclic", the "next" reference in the last node

问题 There is a linked list that needs to be sorted in O(n Log n) time. I would like to use merge sort, but I can't figure out how to implement it by extending the SplDoublyLinkedList class. The main problem I encountered is that I cannot divide the SplDoublyLinkedList in half without allocating additional memory. If I had independent nodes, I could easily set pointer "next" of the node to a null value, but SplDoublyLinkedList doesn't let me do it. I mean something like that in Java: node

问题 I am having some trouble interpreting this doubly-linked list: struct _dnode { union { struct _dnode *head; struct _dnode *next; }; union { struct _dnode *tail; struct _dnode *prev; }; }; typedef struct _dnode sys_dlist_t; typedef struct _dnode sys_dnode_t; And further functions are defined on this list, like, for example finding if given node is head of the list: static inline int sys_dlist_is_head(sys_dlist_t *list, sys_dnode_t *node) { return list->head == node; } Now, my questions are -

问题 How can I implement a doubly linked list in Swift with all the operations like insert and deletion? I know how to implement singly linked list but I can't find a way to make it a doubly linked list. I am a beginner in coding. import UIKit struct LinkedList<Value> { var Head : node<Value>? var Tail : node<Value>? var isEmpty : Bool { return Head == nil } // to add at the beginning of the list mutating func push(_ value : Value) { Head = node(value: value, nextNode: Head) if Tail == nil { Tail

问题 I'm building my own linked list class and I'm having some issues figuring out how to write some functions to help me traverse this list. This is my first time building a linked list from scratch, so if my approach is unconventional please let me know what might be more conventional. I'd like write a function, within the List class that allows me to increment to the next element called getNext() as well as one that getPrev(); I wrote getNext like this: T* getNext(){return next;} However it

问题 I'm currently at chapter 17 of Programming: Principles and Practice using C++ and I can't figure something out. In the code below, what does the line norse_gods->succ->prev = norse_gods actually do? I know that -> is a member access operator, given a pointer to an object. Does it mean that I'm accessing norse_gods successors predecessor? I'm kind of confused with that. This is only the first part, later on in the book an insert operation is defined, which uses the same notation so I'd like to

问题 This question already has answers here : Does Python GC deal with reference-cycles like this? (4 answers) Closed 6 years ago . Background I'm having a tree structure. Within this tree structure I am maintaining kids of a node as a doubly-linked list: (source: Doubly linked list) (I chose this structure due to breadth-first search method of creating this list.) Problem Now my concern is if garbage collector can automatically destroy this list. Naturally I keep only the reference to the root

问题 I have here a single linked list for a program that makes a collage. This runs perfectly but I was wondering how to make it a double linked list. I really have no idea what a double linked is though or how to create one. Any help would be appreciated... There are 3 classes. class LinearCollage { private Picture myArray[]; private class Node { Picture data; Node pNext; }; private Node pFirst; private Node pLast; private int nPictures; private Picture clipboard; public LinearCollage() { pFirst

问题 I have implemented a simple LRU cache as a doubly linked list written manually from scratch. The cache is filled with objects Request distinguished by their numeric (integer) ID. These Request objects are generated as a stream of L random independent and identically distributed requests for a set of N < L predefined Request objects and arrive to the cache one by one (i.e. in a serial fashion). Then I check for cache hit or miss and if the current cache size has reached the maximum cache size