Linklist

Linklist是链表数据结构，它的节点有一个值和一个指向下一个节点的指针。

源码

• https://github.com/duke-git/lancet/blob/main/datastructure/link/singlylink.go (opens new window)
• https://github.com/duke-git/lancet/blob/main/datastructure/link/doublylink.go (opens new window)

用法

import (
    link "github.com/duke-git/lancet/v2/datastructure/link"
)

目录

1. SinglyLink单链表

• NewSinglyLink
• Values
• InsertAt
• InsertAtHead
• InsertAtTail
• DeleteAt
• DeleteAtHead
• DeleteAtTail
• DeleteValue
• Reverse
• GetMiddleNode
• Size
• IsEmpty
• Clear
• Print

2. DoublyLink双向链表

• NewDoublyLink
• Values
• InsertAt
• InsertAtHead
• InsertAtTail
• DeleteAt
• DeleteAtHead
• DeleteAtTail
• Reverse
• GetMiddleNode
• Size
• IsEmpty
• Clear
• Print

文档

1. SinglyLink

SingleLink是单向链表，它的节点有一个值和一个指向链表的下一个节点的指针。

NewSinglyLink

创建SinglyLink指针实例

函数签名:

type LinkNode[T any] struct {
	Value T
	Next  *LinkNode[T]
}
type SinglyLink[T any] struct {
	Head   *datastructure.LinkNode[T]
	length int
}
func NewSinglyLink[T any]() *SinglyLink[T]

例子:

package main

import (
    "fmt"
    link "github.com/duke-git/lancet/v2/datastructure/link"
)

func main() {
    lk := link.NewSinglyLink[int]()
    fmt.Println(lk)
}

Values

返回链表中所有节点值的切片

函数签名:

func (link *SinglyLink[T]) Values() []T

例子:

package main

import (
    "fmt"
    link "github.com/duke-git/lancet/v2/datastructure/link"
)

func main() {
    lk := link.NewSinglyLink[int]()

    lk.InsertAtTail(1)
    lk.InsertAtTail(2)
    lk.InsertAtTail(3)

    fmt.Println(lk.Values()) //[]int{1, 2, 3}
}

InsertAt

将值插入到索引处的链表中，索引应大于或等于 0 且小于或等于链表节点数

函数签名:

func (link *SinglyLink[T]) InsertAt(index int, value T) error

例子:

package main

import (
    "fmt"
    link "github.com/duke-git/lancet/v2/datastructure/link"
)

func main() {
    lk := link.NewSinglyLink[int]()

    lk.InsertAt(0, 1)
    lk.InsertAt(1, 2)
    lk.InsertAt(2, 3)
    lk.InsertAt(2, 4)

    fmt.Println(lk.Values()) //[]int{1, 2, 4, 3}
}

InsertAtHead

将值插入到链表表头

函数签名:

func (link *SinglyLink[T]) InsertAtHead(value T)

例子:

package main

import (
    "fmt"
    link "github.com/duke-git/lancet/v2/datastructure/link"
)

func main() {
    lk := link.NewSinglyLink[int]()

    lk.InsertAtHead(1)
    lk.InsertAtHead(2)
    lk.InsertAtHead(3)

    fmt.Println(lk.Values()) //[]int{3, 2, 1}
}

InsertAtTail

将值插入到链表末尾

函数签名:

func (link *SinglyLink[T]) InsertAtTail(value T)

例子:

package main

import (
    "fmt"
    link "github.com/duke-git/lancet/v2/datastructure/link"
)

func main() {
    lk := link.NewSinglyLink[int]()

    lk.InsertAtTail(1)
    lk.InsertAtTail(2)
    lk.InsertAtTail(3)

    fmt.Println(lk.Values()) //[]int{1, 2, 3}
}

DeleteAt

删除特定索引处的值，索引应大于或等于0且小于或等于链接节点数 - 1

函数签名:

func (link *SinglyLink[T]) DeleteAt(index int) error

例子:

package main

import (
    "fmt"
    link "github.com/duke-git/lancet/v2/datastructure/link"
)

func main() {
    lk := link.NewSinglyLink[int]()

    lk.InsertAtTail(1)
    lk.InsertAtTail(2)
    lk.InsertAtTail(3)
    lk.InsertAtTail(4)

    err := lk.DeleteAt(3)

    fmt.Println(err) //nil
    fmt.Println(lk.Values()) //[]int{1, 2, 3}
}

DeleteAtHead

删除链表头节点

函数签名:

func (link *SinglyLink[T]) DeleteAtHead() error

例子:

package main

import (
    "fmt"
    link "github.com/duke-git/lancet/v2/datastructure/link"
)

func main() {
    lk := link.NewSinglyLink[int]()

    lk.InsertAtTail(1)
    lk.InsertAtTail(2)
    lk.InsertAtTail(3)
    lk.InsertAtTail(4)

    err := lk.DeleteAtHead()
    
    fmt.Println(err) //nil
    fmt.Println(lk.Values()) //[]int{2, 3, 4}
}

DeleteAtTail

删除链表末尾节点

函数签名:

func (link *SinglyLink[T]) DeleteAtTail() error

例子:

package main

import (
    "fmt"
    link "github.com/duke-git/lancet/v2/datastructure/link"
)

func main() {
    lk := link.NewSinglyLink[int]()

    lk.InsertAtTail(1)
    lk.InsertAtTail(2)
    lk.InsertAtTail(3)

    err := lk.DeleteAtTail()
    
    fmt.Println(err) //nil
    fmt.Println(lk.Values()) //[]int{1, 2}
}

DeleteValue

删除链表中指定的value值

函数签名:

func (link *SinglyLink[T]) DeleteValue(value T)

例子:

package main

import (
    "fmt"
    link "github.com/duke-git/lancet/v2/datastructure/link"
)

func main() {
    lk := link.NewSinglyLink[int]()

    lk.InsertAtTail(1)
    lk.InsertAtTail(2)
    lk.InsertAtTail(2)
    lk.InsertAtTail(3)

    lk.DeleteValue(2)
    fmt.Println(lk.Values()) //[]int{1, 3}
}

Reverse

反转链表所有节点顺序

函数签名:

func (link *SinglyLink[T]) Reverse()

例子:

package main

import (
    "fmt"
    link "github.com/duke-git/lancet/v2/datastructure/link"
)

func main() {
    lk := link.NewSinglyLink[int]()

    lk.InsertAtTail(1)
    lk.InsertAtTail(2)
    lk.InsertAtTail(3)

    lk.Reverse()
    fmt.Println(lk.Values()) //[]int{3, 2, 1}
}

GetMiddleNode

获取链表中部节点

函数签名:

func (link *SinglyLink[T]) GetMiddleNode() *datastructure.LinkNode[T]

例子:

package main

import (
    "fmt"
    link "github.com/duke-git/lancet/v2/datastructure/link"
)

func main() {
    lk := link.NewSinglyLink[int]()

    lk.InsertAtTail(1)
    lk.InsertAtTail(2)
    lk.InsertAtTail(3)

    midNode := lk.GetMiddleNode()
    fmt.Println(midNode.Value) //2
}

Size

获取链表节点数量

函数签名:

func (link *SinglyLink[T]) Size() int

例子:

package main

import (
    "fmt"
    link "github.com/duke-git/lancet/v2/datastructure/link"
)

func main() {
    lk := link.NewSinglyLink[int]()

    lk.InsertAtTail(1)
    lk.InsertAtTail(2)
    lk.InsertAtTail(3)

    fmt.Println(lk.Size()) //3
}

IsEmpty

判断链表是否为空

函数签名:

func (link *SinglyLink[T]) IsEmpty() bool

例子:

package main

import (
    "fmt"
    link "github.com/duke-git/lancet/v2/datastructure/link"
)

func main() {
    lk := link.NewSinglyLink[int]()
    fmt.Println(lk.IsEmpty()) //true

    lk.InsertAtTail(1)
    lk.InsertAtTail(2)
    lk.InsertAtTail(3)

    fmt.Println(lk.IsEmpty()) //false
}

Clear

清空链表所有节点

函数签名:

func (link *SinglyLink[T]) Clear()

例子:

package main

import (
    "fmt"
    link "github.com/duke-git/lancet/v2/datastructure/link"
)

func main() {
    lk := link.NewSinglyLink[int]()

    lk.InsertAtTail(1)
    lk.InsertAtTail(2)
    lk.InsertAtTail(3)

    lk.Clear()

    fmt.Println(lk.Values()) //
}

Print

打印链表结构

函数签名:

func (link *SinglyLink[T]) Clear()

例子:

package main

import (
    "fmt"
    link "github.com/duke-git/lancet/v2/datastructure/link"
)

func main() {
    lk := link.NewSinglyLink[int]()

    lk.InsertAtTail(1)
    lk.InsertAtTail(2)
    lk.InsertAtTail(3)
    
    lk.Print() //[ &{Value:1 Pre:<nil> Next:0xc0000a4048}, &{Value:2 Pre:<nil> Next:0xc0000a4060}, &{Value:3 Pre:<nil> Next:<nil>} ]
}

2. DoublyLink

DoublyLink是双向链表，它的节点有一个值，next指针指向下一个节点，pre指针指向前一个节点。

NewDoublyLink

创建NewDoublyLink指针实例

函数签名:

type LinkNode[T any] struct {
	Value T
    Pre   *LinkNode[T]
	Next  *LinkNode[T]
}
type DoublyLink[T any] struct {
	Head   *datastructure.LinkNode[T]
	length int
}
func NewDoublyLink[T any]() *DoublyLink[T]

例子:

package main

import (
    "fmt"
    link "github.com/duke-git/lancet/v2/datastructure/link"
)

func main() {
    lk := link.NewDoublyLink[int]()
    fmt.Println(lk)
}

Values

返回链表中所有节点值的切片

函数签名:

func (link *DoublyLink[T]) Values() []T

例子:

package main

import (
    "fmt"
    link "github.com/duke-git/lancet/v2/datastructure/link"
)

func main() {
    lk := link.NewDoublyLink[int]()

    lk.InsertAtTail(1)
    lk.InsertAtTail(2)
    lk.InsertAtTail(3)

    fmt.Println(lk.Values()) //[]int{1, 2, 3}
}

InsertAt

将值插入到索引处的链表中，索引应大于或等于 0 且小于或等于链表节点数

函数签名:

func (link *DoublyLink[T]) InsertAt(index int, value T) error

例子:

package main

import (
    "fmt"
    link "github.com/duke-git/lancet/v2/datastructure/link"
)

func main() {
    lk := link.NewDoublyLink[int]()

    lk.InsertAt(0, 1)
    lk.InsertAt(1, 2)
    lk.InsertAt(2, 3)
    lk.InsertAt(2, 4)

    fmt.Println(lk.Values()) //[]int{1, 2, 4, 3}
}

InsertAtHead

将值插入到链表表头

函数签名:

func (link *DoublyLink[T]) InsertAtHead(value T)

例子:

package main

import (
    "fmt"
    link "github.com/duke-git/lancet/v2/datastructure/link"
)

func main() {
    lk := link.NewDoublyLink[int]()

    lk.InsertAtHead(1)
    lk.InsertAtHead(2)
    lk.InsertAtHead(3)

    fmt.Println(lk.Values()) //[]int{3, 2, 1}
}

InsertAtTail

将值插入到链表末尾

函数签名:

func (link *DoublyLink[T]) InsertAtTail(value T)

例子:

package main

import (
    "fmt"
    link "github.com/duke-git/lancet/v2/datastructure/link"
)

func main() {
    lk := link.NewDoublyLink[int]()

    lk.InsertAtTail(1)
    lk.InsertAtTail(2)
    lk.InsertAtTail(3)

    fmt.Println(lk.Values()) //[]int{1, 2, 3}
}

DeleteAt

删除特定索引处的值，索引应大于或等于0且小于或等于链接节点数 - 1

函数签名:

func (link *DoublyLink[T]) DeleteAt(index int) error

例子:

package main

import (
    "fmt"
    link "github.com/duke-git/lancet/v2/datastructure/link"
)

func main() {
    lk := link.NewDoublyLink[int]()

    lk.InsertAtTail(1)
    lk.InsertAtTail(2)
    lk.InsertAtTail(3)
    lk.InsertAtTail(4)

    err := lk.DeleteAt(3)

    fmt.Println(err) //nil
    fmt.Println(lk.Values()) //[]int{1, 2, 3}
}

DeleteAtHead

删除链表头节点

函数签名:

func (link *DoublyLink[T]) DeleteAtHead() error

例子:

package main

import (
    "fmt"
    link "github.com/duke-git/lancet/v2/datastructure/link"
)

func main() {
    lk := link.NewDoublyLink[int]()

    lk.InsertAtTail(1)
    lk.InsertAtTail(2)
    lk.InsertAtTail(3)
    lk.InsertAtTail(4)

    err := lk.DeleteAtHead()
    
    fmt.Println(err) //nil
    fmt.Println(lk.Values()) //[]int{2, 3, 4}
}

DeleteAtTail

删除链表末尾节点

函数签名:

func (link *DoublyLink[T]) DeleteAtTail() error

例子:

package main

import (
    "fmt"
    link "github.com/duke-git/lancet/v2/datastructure/link"
)

func main() {
    lk := link.NewDoublyLink[int]()

    lk.InsertAtTail(1)
    lk.InsertAtTail(2)
    lk.InsertAtTail(3)

    err := lk.DeleteAtTail()
    
    fmt.Println(err) //nil
    fmt.Println(lk.Values()) //[]int{1, 2}
}

Reverse

反转链表所有节点顺序

函数签名:

func (link *DoublyLink[T]) Reverse()

例子:

package main

import (
    "fmt"
    link "github.com/duke-git/lancet/v2/datastructure/link"
)

func main() {
    lk := link.NewDoublyLink[int]()

    lk.InsertAtTail(1)
    lk.InsertAtTail(2)
    lk.InsertAtTail(3)

    lk.Reverse()
    fmt.Println(lk.Values()) //[]int{3, 2, 1}
}

GetMiddleNode

获取链表中部节点

函数签名:

func (link *DoublyLink[T]) GetMiddleNode() *datastructure.LinkNode[T]

例子:

package main

import (
    "fmt"
    link "github.com/duke-git/lancet/v2/datastructure/link"
)

func main() {
    lk := link.NewDoublyLink[int]()

    lk.InsertAtTail(1)
    lk.InsertAtTail(2)
    lk.InsertAtTail(3)

    midNode := lk.GetMiddleNode()
    fmt.Println(midNode.Value) //2
}

Size

获取链表节点数量

函数签名:

func (link *DoublyLink[T]) Size() int

例子:

package main

import (
    "fmt"
    link "github.com/duke-git/lancet/v2/datastructure/link"
)

func main() {
    lk := link.NewDoublyLink[int]()

    lk.InsertAtTail(1)
    lk.InsertAtTail(2)
    lk.InsertAtTail(3)

    fmt.Println(lk.Size()) //3
}

IsEmpty

判断链表是否为空

函数签名:

func (link *DoublyLink[T]) IsEmpty() bool

例子:

package main

import (
    "fmt"
    link "github.com/duke-git/lancet/v2/datastructure/link"
)

func main() {
    lk := link.NewDoublyLink[int]()
    fmt.Println(lk.IsEmpty()) //true

    lk.InsertAtTail(1)
    lk.InsertAtTail(2)
    lk.InsertAtTail(3)

    fmt.Println(lk.IsEmpty()) //false
}

Clear

清空链表所有节点

函数签名:

func (link *DoublyLink[T]) Clear()

例子:

package main

import (
    "fmt"
    link "github.com/duke-git/lancet/v2/datastructure/link"
)

func main() {
    lk := link.NewDoublyLink[int]()

    lk.InsertAtTail(1)
    lk.InsertAtTail(2)
    lk.InsertAtTail(3)

    lk.Clear()

    fmt.Println(lk.Values()) //
}

Print

打印链表结构

函数签名:

func (link *DoublyLink[T]) Clear()

例子:

package main

import (
    "fmt"
    link "github.com/duke-git/lancet/v2/datastructure/link"
)

func main() {
    lk := link.NewDoublyLink[int]()

    lk.InsertAtTail(1)
    lk.InsertAtTail(2)
    lk.InsertAtTail(3)
    
    lk.Print() //
}