Golang is an efficient, concise, safe and highly scalable programming language that supports the implementation of data structures such as linked lists. A linked list is a commonly used data structure that can be used to implement stacks, queues, and other data structures. In a linked list, each node contains data and a pointer to the next node. The insertion and deletion operations of linked lists are more efficient than arrays, but the deletion operations of linked lists are more complicated. This article will introduce how to implement linked list deletion operation in Golang.
- Basic knowledge of linked lists
In Golang, linked lists are implemented using structures and pointers. Each node contains data and a pointer to the next node, with the last node's pointer being null.
The following is a simple example of a linked list:
type Node struct { val int next *Node }
The above code defines a structure named Node, which contains a val of type int and a pointer next pointing to the next node.
You can use the following method to create a linked list:
func createLinkedList() *Node { head := Node{0, nil} // 创建头结点 curr := &head // 添加节点到链表 for i := 1; i < 10; i++ { node := Node{i, nil} curr.next = &node curr = &node } return &head }
The above code will start from the head node and add each node to the linked list through a continuous loop. Finally, the entire linked list is returned.
- Linked list deletion operation
The linked list deletion operation requires first traversing the linked list to find the node that needs to be deleted. Then, update the pointer of the node before that node so that it points to the node next to the deleted node. Finally, release the memory space occupied by the deleted node.
The following is the method to implement the linked list deletion operation:
func deleteNode(head *Node, val int) *Node { dummy := &Node{0, head} // 创建虚拟头结点 prev := dummy curr := head // 遍历链表,寻找需要删除的节点 for curr != nil { if curr.val == val { prev.next = curr.next // 更新前一个节点的指针 break } prev = curr curr = curr.next } return dummy.next }
The above code first creates a virtual head node to handle the situation where the deletion starts with the head node. Then, traverse the linked list and find the node that needs to be deleted. Finally, the pointer of the previous node is updated so that it points to the node next to the deleted node. Returns the remaining nodes in the linked list.
- Complete code
The following is a complete program, including creating a linked list and deleting nodes:
package main import "fmt" type Node struct { val int next *Node } func createLinkedList() *Node { head := Node{0, nil} // 创建头结点 curr := &head // 添加节点到链表 for i := 1; i < 10; i++ { node := Node{i, nil} curr.next = &node curr = &node } return &head } func deleteNode(head *Node, val int) *Node { dummy := &Node{0, head} // 创建虚拟头结点 prev := dummy curr := head // 遍历链表,寻找需要删除的节点 for curr != nil { if curr.val == val { prev.next = curr.next // 更新前一个节点的指针 break } prev = curr curr = curr.next } return dummy.next } func main() { head := createLinkedList() fmt.Println("before delete:") curr := head for curr != nil { fmt.Println(curr.val) curr = curr.next } head = deleteNode(head, 5) fmt.Println("after delete:") curr = head for curr != nil { fmt.Println(curr.val) curr = curr.next } }
This program creates a list of 10 A linked list of nodes, and the node with val 5 is deleted. Finally, output the values of the remaining nodes.
- Summary
This article introduces how to use Golang to implement linked list deletion operations. Linked list is an important data structure and is widely used in algorithms. The method introduced in this article can be applied to the implementation of linked lists in other programming languages, and you can choose to use it based on your actual needs.
The above is the detailed content of golang linked list deletion. For more information, please follow other related articles on the PHP Chinese website!

You should care about the "strings" package in Go because it provides tools for handling text data, splicing from basic strings to advanced regular expression matching. 1) The "strings" package provides efficient string operations, such as Join functions used to splice strings to avoid performance problems. 2) It contains advanced functions, such as the ContainsAny function, to check whether a string contains a specific character set. 3) The Replace function is used to replace substrings in a string, and attention should be paid to the replacement order and case sensitivity. 4) The Split function can split strings according to the separator and is often used for regular expression processing. 5) Performance needs to be considered when using, such as

The"encoding/binary"packageinGoisessentialforhandlingbinarydata,offeringtoolsforreadingandwritingbinarydataefficiently.1)Itsupportsbothlittle-endianandbig-endianbyteorders,crucialforcross-systemcompatibility.2)Thepackageallowsworkingwithcus

Mastering the bytes package in Go can help improve the efficiency and elegance of your code. 1) The bytes package is crucial for parsing binary data, processing network protocols, and memory management. 2) Use bytes.Buffer to gradually build byte slices. 3) The bytes package provides the functions of searching, replacing and segmenting byte slices. 4) The bytes.Reader type is suitable for reading data from byte slices, especially in I/O operations. 5) The bytes package works in collaboration with Go's garbage collector, improving the efficiency of big data processing.

You can use the "strings" package in Go to manipulate strings. 1) Use strings.TrimSpace to remove whitespace characters at both ends of the string. 2) Use strings.Split to split the string into slices according to the specified delimiter. 3) Merge string slices into one string through strings.Join. 4) Use strings.Contains to check whether the string contains a specific substring. 5) Use strings.ReplaceAll to perform global replacement. Pay attention to performance and potential pitfalls when using it.

ThebytespackageinGoishighlyeffectiveforbyteslicemanipulation,offeringfunctionsforsearching,splitting,joining,andbuffering.1)Usebytes.Containstosearchforbytesequences.2)bytes.Splithelpsbreakdownbyteslicesusingdelimiters.3)bytes.Joinreconstructsbytesli

ThealternativestoGo'sbytespackageincludethestringspackage,bufiopackage,andcustomstructs.1)Thestringspackagecanbeusedforbytemanipulationbyconvertingbytestostringsandback.2)Thebufiopackageisidealforhandlinglargestreamsofbytedataefficiently.3)Customstru

The"bytes"packageinGoisessentialforefficientlymanipulatingbyteslices,crucialforbinarydata,networkprotocols,andfileI/O.ItoffersfunctionslikeIndexforsearching,Bufferforhandlinglargedatasets,Readerforsimulatingstreamreading,andJoinforefficient

Go'sstringspackageiscrucialforefficientstringmanipulation,offeringtoolslikestrings.Split(),strings.Join(),strings.ReplaceAll(),andstrings.Contains().1)strings.Split()dividesastringintosubstrings;2)strings.Join()combinesslicesintoastring;3)strings.Rep


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

SublimeText3 Linux new version
SublimeText3 Linux latest version

WebStorm Mac version
Useful JavaScript development tools
