linked-list

问题 So I got this question from an exam. How would you get the nth node from the tail in a singly linked list? Each Node has a value and a next (which is a pointer to the next value). We are given this: getNodeFromTail(Node head, int x) { } So the way I did it is to find the length of the list by traversing it once. Then going again to get the (length - x) node. So in total, 2 traversals. getNodeFromTail(Node head, int x) { int length = 0; Node headdupe = head; while (headdupe.next != NULL) {

问题 So currently I'm working on a project to just help me practice java. I have a game that I followed a tutorial on and I've modified it a bit, now I'm trying to figure out a way to sort a text file with a String followed by an Integer. My previous attempts have all failed and I have yet to find an online resource that has actually worked. I've successfully sorted it alphabetically using the String but I want to sort it by the Integer value. Text File example abc 31 adc 100 ccd 211 ddc 99 The

问题 I am new to LinkedList class, and facing difficulties as to how to use it in order to implement or instantiate stack and queues object. I am not looking for piece of self-implemented codes. I wanted to know how do we use this class as stack and queues and can use the already defined methods: pop,push,enqueue and dequeue or top (in case of stacks). 回答1: Queue A LinkedList is already a queue, since it implements the Queue interface (and check the Javadoc yourself). Hence it has the following

问题 I am studying data-structure: singly link list. The website says singly linked list has a insertion and deletion time complexity of O(1) . Am I missing something? website link I do this in C++, and I only have a root pointer . If I want to insert at the end, then I have to travel all the way to the back, which means O(n) . 回答1: The explanation for this is, that the big O notation in the linked table refers to the function implementation itself, not including the list traversal to find the

问题 I am studying data-structure: singly link list. The website says singly linked list has a insertion and deletion time complexity of O(1) . Am I missing something? website link I do this in C++, and I only have a root pointer . If I want to insert at the end, then I have to travel all the way to the back, which means O(n) . 回答1: The explanation for this is, that the big O notation in the linked table refers to the function implementation itself, not including the list traversal to find the

问题 Which collection interface is efficient to implement the singly and doubly linked list in java? code sample please? 回答1: The right interface to implement a doubly-linked list is, unsurprisingly, a LinkedList. See the JavaDoc. I'm not going to give you a code sample here; they're all over the web and you could find one with two minutes' research. If you want a singly-linked list for some reason, you're probably going to have to roll your own using a custom Node class. Each Node should just

问题 Closed. This question needs debugging details. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 4 days ago . Improve this question I want to write a subroutine with name duplicate C that duplicates each element in a list of integer elements. The list is stored as a linked list where the nodes are given by: struct nodeEl { int el; struct nodeEl * next; }; typedef struct nodeEl node; List header (of type node *

问题 So I'm trying to write a Data Structures Visualizer with JS (so that I can host it online). It seems as though my JS ignoring my variables (and claiming some functions don't exist) and I can't figure out why. I'd appreciate the help. var stack = new Stack(); var defaultValueCounter = 0; function push() { var value = document.getElementById("add").value; if (value === "") { defaultValueCounter++; value = defaultValueCounter; } //console.log(stack + ", " + value) stack.push(value); addCol(value

问题 Closed. This question needs debugging details. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 4 days ago . Improve this question I want to write a subroutine with name duplicate C that duplicates each element in a list of integer elements. The list is stored as a linked list where the nodes are given by: struct nodeEl { int el; struct nodeEl * next; }; typedef struct nodeEl node; List header (of type node *

问题 So I'm trying to write a Data Structures Visualizer with JS (so that I can host it online). It seems as though my JS ignoring my variables (and claiming some functions don't exist) and I can't figure out why. I'd appreciate the help. var stack = new Stack(); var defaultValueCounter = 0; function push() { var value = document.getElementById("add").value; if (value === "") { defaultValueCounter++; value = defaultValueCounter; } //console.log(stack + ", " + value) stack.push(value); addCol(value