u32

README

u32

uint32 utils

Documentation

Index

• func Decode(bytes []byte) uint32
• func Encode(num uint32) []byte
• func IsIntersect(a, b []uint32) bool
• func Jaccard(a, b []uint32) int
• func StrToUint32(str string) uint32
• func Uint32ToStr(num uint32) string
• type Count
• type Int32Slice
  • func (p Int32Slice) Len() int
  • func (p Int32Slice) Less(i, j int) bool
  • func (p Int32Slice) Sort()
  • func (p Int32Slice) Swap(i, j int)
• type Set
  • func NewSet(nums ...uint32) *Set
  • func (a Set) Add(nums ...uint32)
  • func (a *Set) Clear()
  • func (a *Set) Complement(full *Set)
  • func (a *Set) Contain(sets ...*Set) bool
  • func (a Set) Copy() Set
  • func (a *Set) Empty() bool
  • func (a *Set) Equal(b *Set) bool
  • func (a Set) Has(nums ...uint32) bool
  • func (a Set) HasAll(nums ...uint32) bool
  • func (a Set) Hit(nums ...uint32) int
  • func (a Set) Intersect(sets ...*Set)
  • func (a *Set) Jaccard(sets ...*Set) int
  • func (a *Set) Len() int
  • func (a Set) Minus(sets ...*Set)
  • func (a Set) Numbers() []uint32
  • func (a Set) Remove(nums ...uint32) *Set
  • func (a Set) Retain(nums ...uint32)
  • func (a Set) Union(sets ...*Set)
• type SetCount
  • func (m SetCount) Add(sets ...*Set)
  • func (m SetCount) Count(removeSets ...*Set) []Count

Examples

• IsIntersect
• Jaccard
• NewSet
• Set.Add
• Set.Clear
• Set.Has
• Set.HasAll
• Set.Hit
• Set.Jaccard
• Set.Len
• SetCount.Count
• StrToUint32
• Uint32ToStr

Functions

func Decode

func Decode(bytes []byte) uint32

Decode is bytes to uint32.

func Encode

func Encode(num uint32) []byte

Encode is uint32 to bytes.

func IsIntersect

func IsIntersect(a, b []uint32) bool

IsIntersect A and B is sorted

Example

fmt.Println(IsIntersect([]uint32{}, []uint32{3, 4, 5}))
fmt.Println(IsIntersect([]uint32{1, 2, 3}, []uint32{3, 4, 5}))
fmt.Println(IsIntersect([]uint32{1, 2, 6}, []uint32{3, 4, 5}))

Output:

false
true
false

func Jaccard

func Jaccard(a, b []uint32) int

Jaccard (A, B) = |A intersect B| / |A union B| * 1000

Example

fmt.Println(Jaccard([]uint32{1, 2, 3}, []uint32{1, 2, 4}))
fmt.Println(Jaccard([]uint32{1, 2, 3}, []uint32{1, 4, 5}))
fmt.Println(Jaccard([]uint32{1, 2, 3}, []uint32{1, 4, 5, 6, 7, 8}))

Output:

500
200
125

func StrToUint32

func StrToUint32(str string) uint32

StrToUint32 string to uint32.

Example

fmt.Println(StrToUint32("4dItAQ"))
fmt.Println(StrToUint32("end"))

Output:

19780321
30586

func Uint32ToStr

func Uint32ToStr(num uint32) string

Uint32ToStr uint32 to string.

Example

fmt.Println(Uint32ToStr(19780321))
fmt.Println(Uint32ToStr(30586))

Output:

4dItAQ
enc

Types

type Count

type Count struct {
	Num uint32
	Sum uint8
}

Count is count Uint32.

type Int32Slice

type Int32Slice []uint32

Int32Slice is utin32 sort slice.

func (Int32Slice) Len

func (p Int32Slice) Len() int

func (Int32Slice) Less

func (p Int32Slice) Less(i, j int) bool

func (Int32Slice) Sort

func (p Int32Slice) Sort()

Sort []uint32.

func (Int32Slice) Swap

func (p Int32Slice) Swap(i, j int)

type Set

type Set map[uint32]bool

Set uint32集合.

func NewSet

func NewSet(nums ...uint32) *Set

NewSet 新建uint32集合.

Example

set := NewSet(1, 2, 3, 3, 2, 1)
fmt.Println(set.Numbers())

Output:

[1 2 3]

func (Set) Add

func (a Set) Add(nums ...uint32)

Add 增加uint32.

Example

set := NewSet(1, 2)
set.Add(4)
set.Add(3, 2, 1, 4)
fmt.Println(set.Numbers())

Output:

[1 2 3 4]

func (*Set) Clear

func (a *Set) Clear()

Clear 清空集合.

Example

set := NewSet(1, 2, 3)
fmt.Println(set.Numbers())
set.Clear()
fmt.Println(set.Numbers())

Output:

[1 2 3]
[]

func (*Set) Complement

func (a *Set) Complement(full *Set)

Complement 补集.

func (*Set) Contain

func (a *Set) Contain(sets ...*Set) bool

Contain 全包含..

func (Set) Copy

func (a Set) Copy() Set

Copy 复制.

func (*Set) Empty

func (a *Set) Empty() bool

Empty 是否为空.

func (*Set) Equal

func (a *Set) Equal(b *Set) bool

Equal 集合比较.

func (Set) Has

func (a Set) Has(nums ...uint32) bool

Has 是否包含任意一个uint32..

Example

set := NewSet(6, 3)
fmt.Println(set.Has(3))
fmt.Println(set.Has(6))
fmt.Println(set.Has(5))
fmt.Println(set.Has(3, 6))
fmt.Println(set.Has(3, 6, 5))

Output:

true
true
false
true
true

func (Set) HasAll

func (a Set) HasAll(nums ...uint32) bool

HasAll 是否包含全部uint32.

Example

set := NewSet(6, 3)
fmt.Println(set.HasAll(3))
fmt.Println(set.HasAll(6))
fmt.Println(set.HasAll(5))
fmt.Println(set.HasAll(3, 6))
fmt.Println(set.HasAll(3, 6, 5))

Output:

true
true
false
true
false

func (Set) Hit

func (a Set) Hit(nums ...uint32) int

Hit 命中次数.

Example

set := NewSet(1, 2, 3)
fmt.Println(set.Hit(2, 3, 4, 5))

Output:

2

func (Set) Intersect

func (a Set) Intersect(sets ...*Set)

Intersect 交集.

func (*Set) Jaccard

func (a *Set) Jaccard(sets ...*Set) int

Jaccard 相似度 (A, B) = |A intersect B| / |A union B| * 1000

Example

a := NewSet(1, 2, 3)
b := NewSet(1, 2, 4)
c := NewSet(1, 4, 5)
d := NewSet(1, 4, 5, 6, 7, 8)
fmt.Println(a.Jaccard(b))
fmt.Println(a.Jaccard(c))
fmt.Println(a.Jaccard(d))

Output:

500
200
125

func (*Set) Len

func (a *Set) Len() int

Len 长度.

Example

set := NewSet(1, 2, 3, 3)
fmt.Println(set.Len())

Output:

3

func (Set) Minus

func (a Set) Minus(sets ...*Set)

Minus 减去.

func (Set) Numbers

func (a Set) Numbers() []uint32

Numbers 返回[]uint32.

func (Set) Remove

func (a Set) Remove(nums ...uint32) *Set

Remove 删除.

func (Set) Retain

func (a Set) Retain(nums ...uint32)

Retain 交集.

func (Set) Union

func (a Set) Union(sets ...*Set)

Union 并集.

type SetCount

type SetCount map[uint32]*Count

SetCount set count.

func (SetCount) Add

func (m SetCount) Add(sets ...*Set)

Add is SetCount add Sets.

func (SetCount) Count

func (m SetCount) Count(removeSets ...*Set) []Count

Count is SetCount count.

Example

sc := SetCount{}
sc.Add(NewSet(1, 2, 3))
sc.Add(NewSet(2, 3, 4), NewSet(4, 5, 6))
fmt.Println(len(sc))
fmt.Println(sc.Count())

Output:

6
[{2 2} {3 2} {4 2} {1 1} {5 1} {6 1}]