eson/structure
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

吃饭

Browse Source
This commit is contained in:
eson 2019-05-07 18:28:45 +08:00
parent db935ea11f
commit ccb923e295
14 changed files with 322 additions and 1113 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
avl/avl.go
View File

@ -117,6 +117,12 @@ func (tree *Tree) Remove(key interface{}) (interface{}, bool) {
return nil, false return nil, false
} }
func (tree *Tree) Clear() {
tree.size = 0
tree.root = nil
tree.iter = NewIteratorWithCap(nil, 16)
}
// Values 返回先序遍历的值 // Values 返回先序遍历的值
func (tree *Tree) Values() []interface{} { func (tree *Tree) Values() []interface{} {
mszie := 0 mszie := 0

6
avldup/avldup.go
View File

@ -117,6 +117,12 @@ func (tree *Tree) Remove(key interface{}) (interface{}, bool) {
return nil, false return nil, false
} }
func (tree *Tree) Clear() {
tree.size = 0
tree.root = nil
tree.iter = NewIteratorWithCap(nil, 16)
}
// Values 返回先序遍历的值 // Values 返回先序遍历的值
func (tree *Tree) Values() []interface{} { func (tree *Tree) Values() []interface{} {
mszie := 0 mszie := 0

6
avlkey/avlkey.go
View File

@ -118,6 +118,12 @@ func (tree *Tree) Remove(key interface{}) (interface{}, bool) {
return nil, false return nil, false
} }
func (tree *Tree) Clear() {
tree.size = 0
tree.root = nil
tree.iter = NewIteratorWithCap(nil, 16)
}
// Values 返回先序遍历的值 // Values 返回先序遍历的值
func (tree *Tree) Values() []interface{} { func (tree *Tree) Values() []interface{} {
mszie := 0 mszie := 0

6
avlkeydup/avlkeydup.go
View File

@ -118,6 +118,12 @@ func (tree *Tree) Remove(key interface{}) (interface{}, bool) {
return nil, false return nil, false
} }
func (tree *Tree) Clear() {
tree.size = 0
tree.root = nil
tree.iter = NewIteratorWithCap(nil, 16)
}
// Values 返回先序遍历的值 // Values 返回先序遍历的值
func (tree *Tree) Values() []interface{} { func (tree *Tree) Values() []interface{} {
mszie := 0 mszie := 0

695
hashmap/avlkeydup.go
View File

@ -1,695 +0,0 @@
package hashmap
import (
"474420502.top/eson/structure/compare"
"github.com/davecgh/go-spew/spew"
)
type avlNode struct {
children [2]*avlNode
parent *avlNode
height int
key, value interface{}
}
func (n *avlNode) clearAttr() {
n.parent = nil
n.children[0] = nil
n.children[1] = nil
n.height = 0
}
type avlTree struct {
root *avlNode
size int
Compare compare.Compare
}
func avlNew(Compare compare.Compare) *avlTree {
return &avlTree{Compare: Compare}
}
func (tree *avlTree) Size() int {
return tree.size
}
func (tree *avlTree) Clear() {
tree.size = 0
tree.root = nil
}
func (tree *avlTree) Remove(key interface{}) (interface{}, bool) {
if n, ok := tree.GetNode(key); ok {
tree.size--
if tree.size == 0 {
tree.root = nil
return n.value, true
}
left := getHeight(n.children[0])
right := getHeight(n.children[1])
if left == -1 && right == -1 {
p := n.parent
p.children[getRelationship(n)] = nil
tree.fixRemoveHeight(p)
return n.value, true
}
var cur *avlNode
if left > right {
cur = n.children[0]
for cur.children[1] != nil {
cur = cur.children[1]
}
cleft := cur.children[0]
cur.parent.children[getRelationship(cur)] = cleft
if cleft != nil {
cleft.parent = cur.parent
}
} else {
cur = n.children[1]
for cur.children[0] != nil {
cur = cur.children[0]
}
cright := cur.children[1]
cur.parent.children[getRelationship(cur)] = cright
if cright != nil {
cright.parent = cur.parent
}
}
cparent := cur.parent
// 修改为interface 交换
n.value, cur.value = cur.value, n.value
n.key, cur.key = cur.key, n.key
// 考虑到刚好替换的节点是 被替换节点的孩子节点的时候, 从自身修复高度
if cparent == n {
tree.fixRemoveHeight(n)
} else {
tree.fixRemoveHeight(cparent)
}
return cur.value, true
}
return nil, false
}
func (tree *avlTree) Get(key interface{}) (interface{}, bool) {
n, ok := tree.GetNode(key)
if ok {
return n.value, true
}
return n, false
}
func (tree *avlTree) GetNode(key interface{}) (*avlNode, bool) {
for n := tree.root; n != nil; {
switch c := tree.Compare(key, n.key); c {
case -1:
n = n.children[0]
case 1:
n = n.children[1]
case 0:
return n, true
default:
panic("Get Compare only is allowed in -1, 0, 1")
}
}
return nil, false
}
func (tree *avlTree) Put(key, value interface{}) bool {
if tree.size == 0 {
tree.size++
tree.root = &avlNode{key: key, value: value}
return true
}
for cur, c := tree.root, 0; ; {
c = tree.Compare(key, cur.key)
if c == -1 {
if cur.children[0] == nil {
tree.size++
cur.children[0] = &avlNode{key: key, value: value}
cur.children[0].parent = cur
if cur.height == 0 {
tree.fixPutHeight(cur)
}
return true
}
cur = cur.children[0]
} else if c == 1 {
if cur.children[1] == nil {
tree.size++
cur.children[1] = &avlNode{key: key, value: value}
cur.children[1].parent = cur
if cur.height == 0 {
tree.fixPutHeight(cur)
}
return true
}
cur = cur.children[1]
} else {
cur.key = key
cur.value = value
return false
}
}
}
func (tree *avlTree) PutNode(n *avlNode) bool {
if tree.size == 0 {
tree.size++
tree.root = n
return true
}
for cur, c := tree.root, 0; ; {
c = tree.Compare(n.key, cur.key)
if c == -1 {
if cur.children[0] == nil {
tree.size++
cur.children[0] = n
cur.children[0].parent = cur
if cur.height == 0 {
tree.fixPutHeight(cur)
}
return true
}
cur = cur.children[0]
} else if c == 1 {
if cur.children[1] == nil {
tree.size++
cur.children[1] = n
cur.children[1].parent = cur
if cur.height == 0 {
tree.fixPutHeight(cur)
}
return true
}
cur = cur.children[1]
} else {
// panic("same key")
cur.key = n.key
cur.value = n.value
return false
}
}
}
type TraversalMethod int
const (
// L = left R = right D = Value(dest)
_ TraversalMethod = iota
//DLR 先值 然后左递归 右递归 下面同理
DLR
//LDR 先从左边有序访问到右边 从小到大
LDR
// LRD 同理
LRD
// DRL 同理
DRL
// RDL 先从右边有序访问到左边 从大到小
RDL
// RLD 同理
RLD
)
// Traversal 遍历的方法 默认是LDR 从小到大 Compare 为 l < r
func (tree *avlTree) Traversal(every func(*avlNode) bool, traversalMethod ...interface{}) {
if tree.root == nil {
return
}
method := LDR
if len(traversalMethod) != 0 {
method = traversalMethod[0].(TraversalMethod)
}
switch method {
case DLR:
var traverasl func(cur *avlNode) bool
traverasl = func(cur *avlNode) bool {
if cur == nil {
return true
}
if !every(cur) {
return false
}
if !traverasl(cur.children[0]) {
return false
}
if !traverasl(cur.children[1]) {
return false
}
return true
}
traverasl(tree.root)
case LDR:
var traverasl func(cur *avlNode) bool
traverasl = func(cur *avlNode) bool {
if cur == nil {
return true
}
if !traverasl(cur.children[0]) {
return false
}
if !every(cur) {
return false
}
if !traverasl(cur.children[1]) {
return false
}
return true
}
traverasl(tree.root)
case LRD:
var traverasl func(cur *avlNode) bool
traverasl = func(cur *avlNode) bool {
if cur == nil {
return true
}
if !traverasl(cur.children[0]) {
return false
}
if !traverasl(cur.children[1]) {
return false
}
if !every(cur) {
return false
}
return true
}
traverasl(tree.root)
case DRL:
var traverasl func(cur *avlNode) bool
traverasl = func(cur *avlNode) bool {
if cur == nil {
return true
}
if !every(cur) {
return false
}
if !traverasl(cur.children[0]) {
return false
}
if !traverasl(cur.children[1]) {
return false
}
return true
}
traverasl(tree.root)
case RDL:
var traverasl func(cur *avlNode) bool
traverasl = func(cur *avlNode) bool {
if cur == nil {
return true
}
if !traverasl(cur.children[1]) {
return false
}
if !every(cur) {
return false
}
if !traverasl(cur.children[0]) {
return false
}
return true
}
traverasl(tree.root)
case RLD:
var traverasl func(cur *avlNode) bool
traverasl = func(cur *avlNode) bool {
if cur == nil {
return true
}
if !traverasl(cur.children[1]) {
return false
}
if !traverasl(cur.children[0]) {
return false
}
if !every(cur) {
return false
}
return true
}
traverasl(tree.root)
}
}
func (tree *avlTree) lrrotate(cur *avlNode) {
const l = 1
const r = 0
movparent := cur.children[l]
mov := movparent.children[r]
mov.value, cur.value = cur.value, mov.value //交换值达到, 相对位移
mov.key, cur.key = cur.key, mov.key
if mov.children[l] != nil {
movparent.children[r] = mov.children[l]
movparent.children[r].parent = movparent
//movparent.children[r].child = l
} else {
movparent.children[r] = nil
}
if mov.children[r] != nil {
mov.children[l] = mov.children[r]
//mov.children[l].child = l
} else {
mov.children[l] = nil
}
if cur.children[r] != nil {
mov.children[r] = cur.children[r]
mov.children[r].parent = mov
} else {
mov.children[r] = nil
}
cur.children[r] = mov
mov.parent = cur
mov.height = getMaxChildrenHeight(mov) + 1
movparent.height = getMaxChildrenHeight(movparent) + 1
cur.height = getMaxChildrenHeight(cur) + 1
}
func (tree *avlTree) rlrotate(cur *avlNode) {
const l = 0
const r = 1
movparent := cur.children[l]
mov := movparent.children[r]
mov.value, cur.value = cur.value, mov.value //交换值达到, 相对位移
mov.key, cur.key = cur.key, mov.key
if mov.children[l] != nil {
movparent.children[r] = mov.children[l]
movparent.children[r].parent = movparent
} else {
movparent.children[r] = nil
}
if mov.children[r] != nil {
mov.children[l] = mov.children[r]
} else {
mov.children[l] = nil
}
if cur.children[r] != nil {
mov.children[r] = cur.children[r]
mov.children[r].parent = mov
} else {
mov.children[r] = nil
}
cur.children[r] = mov
mov.parent = cur
mov.height = getMaxChildrenHeight(mov) + 1
movparent.height = getMaxChildrenHeight(movparent) + 1
cur.height = getMaxChildrenHeight(cur) + 1
}
func (tree *avlTree) rrotate(cur *avlNode) {
const l = 0
const r = 1
// 1 right 0 left
mov := cur.children[l]
mov.value, cur.value = cur.value, mov.value //交换值达到, 相对位移
mov.key, cur.key = cur.key, mov.key
// mov.children[l]不可能为nil
mov.children[l].parent = cur
cur.children[l] = mov.children[l]
// 解决mov节点孩子转移的问题
if mov.children[r] != nil {
mov.children[l] = mov.children[r]
} else {
mov.children[l] = nil
}
if cur.children[r] != nil {
mov.children[r] = cur.children[r]
mov.children[r].parent = mov
} else {
mov.children[r] = nil
}
// 连接转移后的节点 由于mov只是与cur交换值,parent不变
cur.children[r] = mov
mov.height = getMaxChildrenHeight(mov) + 1
cur.height = getMaxChildrenHeight(cur) + 1
}
func (tree *avlTree) lrotate(cur *avlNode) {
const l = 1
const r = 0
mov := cur.children[l]
mov.value, cur.value = cur.value, mov.value //交换值达到, 相对位移
mov.key, cur.key = cur.key, mov.key
// 不可能为nil
mov.children[l].parent = cur
cur.children[l] = mov.children[l]
if mov.children[r] != nil {
mov.children[l] = mov.children[r]
} else {
mov.children[l] = nil
}
if cur.children[r] != nil {
mov.children[r] = cur.children[r]
mov.children[r].parent = mov
} else {
mov.children[r] = nil
}
cur.children[r] = mov
mov.height = getMaxChildrenHeight(mov) + 1
cur.height = getMaxChildrenHeight(cur) + 1
}
func getMaxAndChildrenHeight(cur *avlNode) (h1, h2, maxh int) {
h1 = getHeight(cur.children[0])
h2 = getHeight(cur.children[1])
if h1 > h2 {
maxh = h1
} else {
maxh = h2
}
return
}
func getMaxChildrenHeight(cur *avlNode) int {
h1 := getHeight(cur.children[0])
h2 := getHeight(cur.children[1])
if h1 > h2 {
return h1
}
return h2
}
func getHeight(cur *avlNode) int {
if cur == nil {
return -1
}
return cur.height
}
func (tree *avlTree) fixRemoveHeight(cur *avlNode) {
for {
lefth, rigthh, lrmax := getMaxAndChildrenHeight(cur)
// 判断当前节点是否有变化, 如果没变化的时候, 不需要往上修复
curheight := lrmax + 1
cur.height = curheight
// 计算高度的差值 绝对值大于2的时候需要旋转
diff := lefth - rigthh
if diff < -1 {
r := cur.children[1] // 根据左旋转的右边节点的子节点 左右高度选择旋转的方式
if getHeight(r.children[0]) > getHeight(r.children[1]) {
tree.lrrotate(cur)
} else {
tree.lrotate(cur)
}
} else if diff > 1 {
l := cur.children[0]
if getHeight(l.children[1]) > getHeight(l.children[0]) {
tree.rlrotate(cur)
} else {
tree.rrotate(cur)
}
} else {
if cur.height == curheight {
return
}
}
if cur.parent == nil {
return
}
cur = cur.parent
}
}
func (tree *avlTree) fixPutHeight(cur *avlNode) {
for {
lefth := getHeight(cur.children[0])
rigthh := getHeight(cur.children[1])
// 计算高度的差值 绝对值大于2的时候需要旋转
diff := lefth - rigthh
if diff < -1 {
r := cur.children[1] // 根据左旋转的右边节点的子节点 左右高度选择旋转的方式
if getHeight(r.children[0]) > getHeight(r.children[1]) {
tree.lrrotate(cur)
} else {
tree.lrotate(cur)
}
} else if diff > 1 {
l := cur.children[0]
if getHeight(l.children[1]) > getHeight(l.children[0]) {
tree.rlrotate(cur)
} else {
tree.rrotate(cur)
}
} else {
// 选择一个child的最大高度 + 1为 高度
if lefth > rigthh {
cur.height = lefth + 1
} else {
cur.height = rigthh + 1
}
}
if cur.parent == nil || cur.height < cur.parent.height {
return
}
cur = cur.parent
}
}
func getRelationship(cur *avlNode) int {
if cur.parent.children[1] == cur {
return 1
}
return 0
}
func output(node *avlNode, prefix string, isTail bool, str *string) {
if node.children[1] != nil {
newPrefix := prefix
if isTail {
newPrefix += "│ "
} else {
newPrefix += " "
}
output(node.children[1], newPrefix, false, str)
}
*str += prefix
if isTail {
*str += "└── "
} else {
*str += "┌── "
}
*str += spew.Sprint(node.value) + "\n"
if node.children[0] != nil {
newPrefix := prefix
if isTail {
newPrefix += " "
} else {
newPrefix += "│ "
}
output(node.children[0], newPrefix, true, str)
}
}
func outputfordebug(node *avlNode, prefix string, isTail bool, str *string) {
if node.children[1] != nil {
newPrefix := prefix
if isTail {
newPrefix += "│ "
} else {
newPrefix += " "
}
outputfordebug(node.children[1], newPrefix, false, str)
}
*str += prefix
if isTail {
*str += "└── "
} else {
*str += "┌── "
}
suffix := "("
parentv := ""
if node.parent == nil {
parentv = "nil"
} else {
parentv = spew.Sprint(node.parent.value)
}
suffix += parentv + "|" + spew.Sprint(node.height) + ")"
*str += spew.Sprint(node.value) + suffix + "\n"
if node.children[0] != nil {
newPrefix := prefix
if isTail {
newPrefix += " "
} else {
newPrefix += "│ "
}
outputfordebug(node.children[0], newPrefix, true, str)
}
}
func (tree *avlTree) debugString() string {
if tree.size == 0 {
return ""
}
str := "AVLTree\n"
outputfordebug(tree.root, "", true, &str)
return str
}

76
hashmap/bucket.go
View File

@ -1,76 +0,0 @@
package hashmap
import (
"474420502.top/eson/structure/compare"
)
type hmBucket struct {
size uint
data []*bucketNode
}
type bucketNode struct {
hash uint
key, value interface{}
}
func newBucket() *hmBucket {
return &hmBucket{}
}
func (bkt *hmBucket) Get(key interface{}, Compare compare.Compare) interface{} {
// bkt.data
for _, n := range bkt.data {
if Compare(n.key, key) == 0 {
return n.value
}
}
return nil
}
func (bkt *hmBucket) Add(hash uint, k, v interface{}, Compare compare.Compare) {
for i := uint(0); i < bkt.size; i++ {
n := bkt.data[i]
if Compare(n.key, k) == 0 {
n.hash = hash
n.key = k
n.value = v
return
}
}
if bkt.size < uint(len(bkt.data)) {
n := bkt.data[bkt.size]
n.hash = hash
n.key = k
n.value = v
bkt.size++
return
}
bkt.data = append(bkt.data, &bucketNode{key: k, value: v, hash: hash})
bkt.size++
}
func (bkt *hmBucket) AddNode(node *bucketNode, Compare compare.Compare) {
for i := uint(0); i < bkt.size; i++ {
n := bkt.data[i]
if Compare(n.key, node.key) == 0 {
n.hash = node.hash
n.key = node.key
n.value = node.value
panic(123)
return
}
}
if bkt.size < uint(len(bkt.data)) {
bkt.data[bkt.size] = node
bkt.size++
return
}
bkt.data = append(bkt.data, node)
bkt.size++
}

63
hashmap/gomap/hashmap.go
View File

@ -1,63 +0,0 @@
package gomap
import "fmt"
type HashMap struct {
hm map[interface{}]interface{}
}
// New instantiates a hash map.
func New() *HashMap {
return &HashMap{hm: make(map[interface{}]interface{})}
}
// Put inserts element into the map.
func (hm *HashMap) Put(key interface{}, value interface{}) {
hm.hm[key] = value
}
func (hm *HashMap) Get(key interface{}) (value interface{}, isfound bool) {
value, isfound = hm.hm[key]
return
}
func (hm *HashMap) Remove(key interface{}) {
delete(hm.hm, key)
}
func (hm *HashMap) Empty() bool {
return len(hm.hm) == 0
}
func (hm *HashMap) Size() int {
return len(hm.hm)
}
func (hm *HashMap) Keys() []interface{} {
keys := make([]interface{}, len(hm.hm))
count := 0
for key := range hm.hm {
keys[count] = key
count++
}
return keys
}
func (hm *HashMap) Values() []interface{} {
values := make([]interface{}, len(hm.hm))
count := 0
for _, value := range hm.hm {
values[count] = value
count++
}
return values
}
func (hm *HashMap) Clear() {
hm.hm = make(map[interface{}]interface{})
}
func (hm *HashMap) String() string {
str := fmt.Sprintf("%v", hm.hm)
return str
}

127
hashmap/hashmap.go
View File

@ -1,104 +1,63 @@
package hashmap package hashmap
import ( import "fmt"
"474420502.top/eson/structure/compare"
)
type HashCode func(key interface{}) uint
type HashMap struct { type HashMap struct {
growfactor uint hm map[interface{}]interface{}
slimmingfactor uint
table *Table
GetHash HashCode
Compare compare.Compare
growsize uint
size uint
} }
func HashInt(key interface{}) uint { // New instantiates a hash map.
thekey := uint(key.(int)) func New() *HashMap {
hbit := thekey & 0xffffffff return &HashMap{hm: make(map[interface{}]interface{})}
lbit := (thekey & 0xffffffff00000000) >> 32
return lbit ^ hbit
} }
func New(hcode HashCode, comp compare.Compare) *HashMap { // Put inserts element into the map.
hm := &HashMap{} func (hm *HashMap) Put(key interface{}, value interface{}) {
hm.growfactor = 2 hm.hm[key] = value
hm.GetHash = hcode
hm.Compare = comp
// initcap := uint(8)
hm.table = newTable()
hm.countNextGrow()
return hm
} }
func (hm *HashMap) countNextGrow() { func (hm *HashMap) Get(key interface{}) (value interface{}, isfound bool) {
hm.growsize = hm.table.Cap() << 1 value, isfound = hm.hm[key]
return
} }
func (hm *HashMap) grow() { func (hm *HashMap) Remove(key interface{}) {
if hm.size >= hm.growsize { delete(hm.hm, key)
newsize := hm.size << 1
// newtable := make([]*avlTree, newsize, newsize)
hm.table.Grow(int(newsize - hm.size))
nodelist := make([]*avlNode, hm.size, hm.size)
i := 0
hm.table.Traversal(func(cur *avlTree) {
if cur != nil {
cur.Traversal(func(node *avlNode) bool {
nodelist[i] = node
i++
return true
})
cur.Clear()
}
})
var hash, index uint
for _, node := range nodelist {
hash = hm.GetHash(node.key)
index = hash % hm.table.cap
//bkt := newtable[index]
bkt := hm.table.GetWithNilSet(index, func(data []*avlTree, idx uint) {
data[idx] = avlNew(hm.Compare)
})
node.clearAttr()
bkt.PutNode(node)
} }
hm.countNextGrow() func (hm *HashMap) Empty() bool {
} return len(hm.hm) == 0
} }
func (hm *HashMap) Put(key, value interface{}) { func (hm *HashMap) Size() int {
hash := hm.GetHash(key) return len(hm.hm)
tlen := hm.table.Cap()
index := hash % tlen
bkt := hm.table.GetWithNilSet(index, func(data []*avlTree, idx uint) {
data[idx] = avlNew(hm.Compare)
})
if bkt.Put(key, value) {
hm.size++
hm.grow()
}
} }
func (hm *HashMap) Get(key interface{}) (interface{}, bool) { func (hm *HashMap) Keys() []interface{} {
hash := hm.GetHash(key) keys := make([]interface{}, len(hm.hm))
count := 0
tlen := hm.table.Cap() for key := range hm.hm {
index := hash % tlen keys[count] = key
count++
bkt := hm.table.Get(index)
if bkt != nil {
return bkt.Get(key)
} }
return nil, false return keys
}
func (hm *HashMap) Values() []interface{} {
values := make([]interface{}, len(hm.hm))
count := 0
for _, value := range hm.hm {
values[count] = value
count++
}
return values
}
func (hm *HashMap) Clear() {
hm.hm = make(map[interface{}]interface{})
}
func (hm *HashMap) String() string {
str := fmt.Sprintf("%v", hm.hm)
return str
} }

90
hashmap/hashmap_test.go
View File

@ -3,13 +3,9 @@ package hashmap
import ( import (
"bytes" "bytes"
"encoding/gob" "encoding/gob"
"fmt"
"io/ioutil" "io/ioutil"
"log" "log"
"runtime"
"testing" "testing"
"474420502.top/eson/structure/compare"
) )
func loadTestData() []int { func loadTestData() []int {
@ -25,7 +21,7 @@ func loadTestData() []int {
return l return l
} }
func TestCount(t *testing.T) { func TestCount(t *testing.T) {
hm := New(HashInt, compare.Int) hm := New()
// for i := 0; i < 100000; i++ { // for i := 0; i < 100000; i++ {
// hm.Put(i, i) // hm.Put(i, i)
// } // }
@ -35,28 +31,14 @@ func TestCount(t *testing.T) {
// t.Error(hm.Get(4)) // t.Error(hm.Get(4))
} }
func PrintMemUsage() { var executeCount = 5
var m runtime.MemStats
runtime.ReadMemStats(&m)
// For info on each, see: https://golang.org/pkg/runtime/#MemStats
fmt.Printf("Alloc = %v MiB", bToMb(m.Alloc))
fmt.Printf("\tTotalAlloc = %v MiB", bToMb(m.TotalAlloc))
fmt.Printf("\tSys = %v MiB", bToMb(m.Sys))
fmt.Printf("\tNumGC = %v\n", m.NumGC)
}
func bToMb(b uint64) uint64 {
return b / 1024 / 1024
}
var executeCount = 1
var compareSize = 100000 var compareSize = 100000
func BenchmarkPut(b *testing.B) { func BenchmarkPut(b *testing.B) {
b.StopTimer() b.StopTimer()
l := loadTestData() l := loadTestData()
hm := New(HashInt, compare.Int) hm := New()
b.N = len(l) * executeCount b.N = len(l) * executeCount
// for i := 0; i < len(l); i++ { // for i := 0; i < len(l); i++ {
@ -94,43 +76,43 @@ func BenchmarkGoPut(b *testing.B) {
//PrintMemUsage() //PrintMemUsage()
} }
func BenchmarkGet(b *testing.B) { // func BenchmarkGet(b *testing.B) {
b.StopTimer() // b.StopTimer()
l := loadTestData() // l := loadTestData()
hm := New(HashInt, compare.Int) // hm := New()
b.N = len(l) * executeCount // b.N = len(l) * executeCount
for i := 0; i < len(l); i++ { // for i := 0; i < len(l); i++ {
v := l[i] // v := l[i]
hm.Put(v, v) // hm.Put(v, v)
} // }
b.StartTimer() // b.StartTimer()
for i := 0; i < b.N; i++ { // for i := 0; i < b.N; i++ {
hm.Get(i) // hm.Get(i)
} // }
//b.Log(len(hm.table), hm.size) // //b.Log(len(hm.table), hm.size)
//PrintMemUsage() // //PrintMemUsage()
} // }
func BenchmarkGoGet(b *testing.B) { // func BenchmarkGoGet(b *testing.B) {
b.StopTimer() // b.StopTimer()
l := loadTestData() // l := loadTestData()
hm := make(map[int]int) // hm := make(map[int]int)
b.N = len(l) * executeCount // b.N = len(l) * executeCount
for i := 0; i < len(l); i++ { // for i := 0; i < len(l); i++ {
v := l[i] // v := l[i]
hm[v] = v // hm[v] = v
} // }
b.StartTimer() // b.StartTimer()
for i := 0; i < b.N; i++ { // for i := 0; i < b.N; i++ {
if _, ok := hm[i]; !ok { // if _, ok := hm[i]; !ok {
} // }
} // }
//b.Log(len(m)) // //b.Log(len(m))
//PrintMemUsage() // //PrintMemUsage()
} // }

142
hashmap/table.go
View File

@ -1,142 +0,0 @@
package hashmap
type Table struct {
// ysizes []int
// xsizes [][]int
// xyproduct int
size uint
growsize uint
data []*avlTree
cap uint
}
func newTable() *Table {
table := &Table{}
table.data = make([]*avlTree, 16, 16)
table.countCap()
return table
}
func (t *Table) countCap() {
t.cap = uint(len(t.data)) // * (4 * 4)
}
func (t *Table) Cap() uint {
return t.cap
}
func (t *Table) Traversal(every func(node *avlTree)) {
for _, z := range t.data {
every(z)
}
}
func (t *Table) Grow(size int) {
zsize := len(t.data) + size
temp := make([]*avlTree, zsize, zsize)
copy(temp, t.data)
t.data = temp
t.countCap()
}
func (t *Table) Get(idx uint) *avlTree {
return t.data[idx]
}
func (t *Table) GetWithNilSet(idx uint, DoSetValue func([]*avlTree, uint)) *avlTree {
if t.data[idx] == nil {
DoSetValue(t.data, idx)
}
return t.data[idx]
}
// func (arr *Table) Get(idx int) (interface{}, bool) {
// zindex := idx / arr.xyproduct
// nextsize := (idx % arr.xyproduct)
// yindex := nextsize / arr.xsize
// xindex := nextsize % arr.xsize
// ydata := arr.data[zindex]
// if ydata == nil {
// return nil, false
// }
// xdata := ydata[yindex]
// if xdata == nil {
// return nil, false
// }
// v := xdata[xindex]
// return v, v != nil
// }
// func (arr *Table) GetOrSet(idx int, DoSetValue func([]interface{}, int)) (result interface{}, isSet bool) {
// zindex := idx / arr.xyproduct
// nidx := (idx % arr.xyproduct)
// yindex := nidx / arr.xsize
// xindex := nidx % arr.xsize
// ydata := arr.data[zindex]
// if ydata == nil {
// ydata = make([][]interface{}, arr.ysize, arr.ysize)
// arr.data[zindex] = ydata
// }
// xdata := ydata[yindex]
// if xdata == nil {
// xdata = make([]interface{}, arr.xsize, arr.xsize)
// ydata[yindex] = xdata
// arr.ysizes[zindex]++
// }
// result = xdata[xindex]
// if result == nil {
// DoSetValue(xdata, xindex)
// result = xdata[xindex]
// if result == nil {
// panic("DoSetValue Not Set <nil> Value")
// }
// arr.xsizes[zindex][yindex]++
// return result, false
// }
// return result, true
// }
// func (arr *Table) Del(idx int) (interface{}, bool) {
// zindex := idx / arr.xyproduct
// nextsize := (idx % arr.xyproduct)
// yindex := nextsize / arr.xsize
// xindex := nextsize % arr.xsize
// ydata := arr.data[zindex]
// if ydata == nil {
// return nil, false
// }
// xdata := ydata[yindex]
// if xdata == nil {
// return nil, false
// }
// v := xdata[xindex]
// xdata[xindex] = nil
// isnotnil := v != nil
// if isnotnil {
// arr.xsizes[zindex][yindex]--
// if arr.xsizes[zindex][yindex] == 0 {
// arr.data[zindex][yindex] = nil
// arr.ysizes[zindex]--
// if arr.ysizes[zindex] == 0 {
// arr.data[zindex] = nil
// }
// }
// }
// return v, isnotnil
// }

80
set/hashset/hashset.go Normal file
View File

@ -0,0 +1,80 @@
package hashset
import (
"fmt"
"strings"
)
var nullItem = struct{}{}
// HashSet
type HashSet struct {
hm map[interface{}]struct{}
}
// New
func New() *HashSet {
return &HashSet{hm: make(map[interface{}]struct{})}
}
// Add
func (set *HashSet) Add(items ...interface{}) {
for _, item := range items {
if _, ok := set.hm[item]; !ok {
set.hm[item] = nullItem
}
}
}
// Remove
func (set *HashSet) Remove(items ...interface{}) {
for _, item := range items {
delete(set.hm, item)
}
}
// Values
func (set *HashSet) Values() []interface{} {
values := make([]interface{}, set.Size())
count := 0
for item := range set.hm {
values[count] = item
count++
}
return values
}
// Contains
func (set *HashSet) Contains(item interface{}) bool {
if _, contains := set.hm[item]; contains {
return true
}
return false
}
// Empty
func (set *HashSet) Empty() bool {
return set.Size() == 0
}
// Clear
func (set *HashSet) Clear() {
set.hm = make(map[interface{}]struct{})
}
// Size
func (set *HashSet) Size() int {
return len(set.hm)
}
// String
func (set *HashSet) String() string {
content := "["
items := []string{}
for k := range set.hm {
items = append(items, fmt.Sprintf("%v", k))
}
content += strings.Join(items, ",")
content += "]"
return content
}

54
set/hashset/hashset_test.go Normal file
View File

@ -0,0 +1,54 @@
package hashset
import (
"bytes"
"encoding/gob"
"io/ioutil"
"log"
"testing"
)
func loadTestData() []int {
log.SetFlags(log.Lshortfile)
data, err := ioutil.ReadFile("../l.log")
if err != nil {
log.Println(err)
}
var l []int
decoder := gob.NewDecoder(bytes.NewReader(data))
decoder.Decode(&l)
return l
}
func TestAdd(t *testing.T) {
set := New()
for i := 0; i < 10; i++ {
set.Add(i)
}
if set.Size() != 10 {
t.Error("size is not equals to 10")
}
}
func TestRemove(t *testing.T) {
set := New()
for i := 0; i < 10; i++ {
set.Add(i)
}
for i := 0; i < 9; i++ {
set.Remove(i)
}
if set.Size() != 1 {
t.Error("size is not equals to 0")
}
if set.Values()[0] != 9 {
t.Error("remain is not 9")
}
}

85
set/treeset/treeset.go Normal file
View File

@ -0,0 +1,85 @@
package treeset
import (
"fmt"
"strings"
"474420502.top/eson/structure/avldup"
"474420502.top/eson/structure/compare"
)
// TreeSet
type TreeSet struct {
tree *avldup.Tree
}
// New
func New(Compare compare.Compare) *TreeSet {
return &TreeSet{tree: avldup.New(Compare)}
}
// Add
func (set *TreeSet) Add(items ...interface{}) {
for _, item := range items {
set.tree.Put(item)
}
}
// Remove
func (set *TreeSet) Remove(items ...interface{}) {
for _, item := range items {
set.tree.Remove(item)
}
}
// Values
func (set *TreeSet) Values() []interface{} {
return set.tree.Values()
}
// Contains
func (set *TreeSet) Contains(item interface{}) bool {
if _, ok := set.tree.Get(item); ok {
return true
}
return false
}
// Contains the result is [r1,r2], not [r1, r2)
func (set *TreeSet) GetRange(r1, r2 interface{}) (result []interface{}) {
return set.tree.GetRange(r1, r2)
}
// Contains the result is [r1,item,r2] r1->item->r2 are close-knit
func (set *TreeSet) GetAround(item interface{}) (result [3]interface{}) {
return set.tree.GetAround(item)
}
// Empty
func (set *TreeSet) Empty() bool {
return set.Size() == 0
}
// Clear
func (set *TreeSet) Clear() {
set.tree.Clear()
}
// Size
func (set *TreeSet) Size() int {
return set.tree.Size()
}
// String
func (set *TreeSet) String() string {
content := "HashSet\n"
items := []string{}
set.tree.Traversal(func(k interface{}) bool {
items = append(items, fmt.Sprintf("%v", k))
return true
})
content += strings.Join(items, ", ")
return content
}

1
set/treeset/treeset_test.go Normal file
View File

@ -0,0 +1 @@
package treeset