doubly-linked-list

问题 So when printing from a DLL I get for all my records the same string values for the following fields: Last Name, First Name, Address, Place of Residence. All these fields hold string values. Although for each node I print I get the correct arithmetic values such as Customer ID, Address Number, Postal Code and Expenditure. This is my main: #include <stdio.h> #include <stdlib.h> #include "ClientList.h" #define SIZE_T 5000 #define YES 1 #define NO 0 main(int argc, char *argv[]){ FILE *fp=NULL;

问题 I am trying to achieve a double linked list using C and have encountered a crash whenever I try to append a third node to my list. I have located the line in my code in which my program crashes, but I cannot understand why since the code looks "safe". I have received no warnings or errors from the compiler. If anyone is able to explain a possible pointer error or the reason behind the crash, it would be much appreciated. Any questions or concerns related to my code will be answered as soon as

问题 I am trying to achieve a double linked list using C and have encountered a crash whenever I try to append a third node to my list. I have located the line in my code in which my program crashes, but I cannot understand why since the code looks "safe". I have received no warnings or errors from the compiler. If anyone is able to explain a possible pointer error or the reason behind the crash, it would be much appreciated. Any questions or concerns related to my code will be answered as soon as

问题 I am going through the doubly linked list in Java, I am reading about Sentinels in the doubly linked list from Book. Which states that In order to avoid some special cases when operating near the boundaries of a doubly-linked list, it helps to add special nodes at both ends of the list: a header node at the beginning of the list, and a trailer node at the end of the list. These “dummy” nodes are known as sentinels (or guards), and they do not store elements of the primary sequence What are

问题 Hope everyone is doing ok. So I am making a simulation of a shop where a customer enters a shop, does shopping, cashes out and then de-spawns. A customer is spawned after a random amount of time. I am using Linked List to store these customers. This program uses SFML for graphics. So I wanted to test my code to have a look at my progress and in order to speed things up, I reduced the amount of time taken for a customer to spawn, the customers started spawning at a fast rate. So somewhere

问题 I want to sort doubly linked list by next_id value. My DLL: const dll = [ {id: '22', prev_id: '41', next_id: '45'}, {id: '45', prev_id: '22', next_id: null}, {id: '41', prev_id: '14', next_id: '22'}, {id: '14', prev_id: null, next_id: '41'}, ] As a result: const dll_result = [ {id: '14', prev_id: null, next_id: '41'}, // next item - 41 {id: '41', prev_id: '14', next_id: '22'}, // next item - 22 {id: '22', prev_id: '41', next_id: '45'}, // next item - 45 {id: '45', prev_id: '22', next_id: null

问题 I'm looking at Data.STM.LinkedList implementation for a high performance linked list. Looking at the documentation, the length function run in O(n) - why is that ? Was there any real issue to implement it in O(1) ? Here is the source code https://hackage.haskell.org/package/stm-linkedlist-0.1.0.0/docs/src/Data-STM-LinkedList-Internal.html#length Is it possible implement it in O(1) ? i'm new to Haskell so I'm not sure if holding some metadata about the list is problematic. Thanks! 回答1: To a

问题 I'm looking at Data.STM.LinkedList implementation for a high performance linked list. Looking at the documentation, the length function run in O(n) - why is that ? Was there any real issue to implement it in O(1) ? Here is the source code https://hackage.haskell.org/package/stm-linkedlist-0.1.0.0/docs/src/Data-STM-LinkedList-Internal.html#length Is it possible implement it in O(1) ? i'm new to Haskell so I'm not sure if holding some metadata about the list is problematic. Thanks! 回答1: To a

问题 Long story short, I'm supposed to make a code that inserts, deletes, searches for and prints numbers in a skip list with the first node being negative infinity and the last node being positive infinity (-inf > (...) > inf). I called my search function from my insert function to find a spot to insert any new nodes (only after the third node has been inserted) and I initialize or reference my nodes outside the main function rather than inside of it (although I'm debating on whether or not I

问题 I'm currently taking a Java class and the professor told us that a good practice to understand links would be to make a doubly linked list. I have made a singly linked list but I am having trouble converting it to a doubly linked list. So I was wondering if anybody could give me any suggestions on making sure my last number is connected to the previous one? And if the front number and last number connected to the null. Here is part of the code, if you wish for more of it just ask and I shall