find key value error

tree/avl/iterator_test.go

@@ -0,0 +1,35 @@
+package avl
+
+import (
+	"sort"
+	"testing"
+
+	"github.com/474420502/focus/compare"
+)
+
+func TestIerator(t *testing.T) {
+	tree := New(compare.Int)
+	l := []int{5, 10, 100, 30, 40, 70, 45, 35, 23}
+	for _, v := range l {
+		tree.Put(v)
+	}
+
+	sort.Ints(l)
+
+	iter := tree.Iterator()
+	iter.ToHead()
+	for i := 0; iter.Next(); i++ {
+
+		if iter.Value() != l[i] {
+			t.Error(iter.Value(), l[i])
+		}
+	}
+	iter.ToTail()
+	iter.Prev()
+	for i := len(l) - 1; iter.Next(); i-- {
+
+		if iter.Value() != l[i] {
+			t.Error(iter.Value(), l[i])
+		}
+	}
+}

tree/avldup/iterator_test.go

@@ -0,0 +1,35 @@
+package avldup
+
+import (
+	"sort"
+	"testing"
+
+	"github.com/474420502/focus/compare"
+)
+
+func TestIerator(t *testing.T) {
+	tree := New(compare.Int)
+	l := []int{5, 10, 100, 30, 40, 70, 45, 35, 23}
+	for _, v := range l {
+		tree.Put(v)
+	}
+
+	sort.Ints(l)
+
+	iter := tree.Iterator()
+	iter.ToHead()
+	for i := 0; iter.Next(); i++ {
+
+		if iter.Value() != l[i] {
+			t.Error(iter.Value(), l[i])
+		}
+	}
+	iter.ToTail()
+	iter.Prev()
+	for i := len(l) - 1; iter.Next(); i-- {
+
+		if iter.Value() != l[i] {
+			t.Error(iter.Value(), l[i])
+		}
+	}
+}

tree/avlkey/iterator_test.go

@@ -0,0 +1,35 @@
+package avlkey
+
+import (
+	"sort"
+	"testing"
+
+	"github.com/474420502/focus/compare"
+)
+
+func TestIerator(t *testing.T) {
+	tree := New(compare.Int)
+	l := []int{5, 10, 100, 30, 40, 70, 45, 35, 23}
+	for _, v := range l {
+		tree.Put(v, v)
+	}
+
+	sort.Ints(l)
+
+	iter := tree.Iterator()
+	iter.ToHead()
+	for i := 0; iter.Next(); i++ {
+
+		if iter.Value() != l[i] {
+			t.Error(iter.Value(), l[i])
+		}
+	}
+	iter.ToTail()
+	iter.Prev()
+	for i := len(l) - 1; iter.Next(); i-- {
+
+		if iter.Value() != l[i] {
+			t.Error(iter.Value(), l[i])
+		}
+	}
+}

tree/avlkeydup/iterator_test.go

@@ -0,0 +1,35 @@
+package avlkeydup
+
+import (
+	"sort"
+	"testing"
+
+	"github.com/474420502/focus/compare"
+)
+
+func TestIerator(t *testing.T) {
+	tree := New(compare.Int)
+	l := []int{5, 10, 100, 30, 40, 70, 45, 35, 23}
+	for _, v := range l {
+		tree.Put(v, v)
+	}
+
+	sort.Ints(l)
+
+	iter := tree.Iterator()
+	iter.ToHead()
+	for i := 0; iter.Next(); i++ {
+
+		if iter.Value() != l[i] {
+			t.Error(iter.Value(), l[i])
+		}
+	}
+	iter.ToTail()
+	iter.Prev()
+	for i := len(l) - 1; iter.Next(); i-- {
+
+		if iter.Value() != l[i] {
+			t.Error(iter.Value(), l[i])
+		}
+	}
+}

tree/rsync.sh

@@ -0,0 +1,21 @@
+
+rsync() {
+    FILE_NAME=$3  #iterator_test.go
+    SRC_DIR_NAME=$1 #vbtkey dir
+    DEST_DIR_NAME=$2 # vbtdupkey dir
+
+    cp ./$SRC_DIR_NAME/$FILE_NAME ./$DEST_DIR_NAME/$FILE_NAME
+    sed -i "s/package $SRC_DIR_NAME/package ${DEST_DIR_NAME}/" ./$DEST_DIR_NAME/$FILE_NAME
+}
+
+# 同步iterator_test
+for dst in "vbtkeydup" "avlkey" "avlkeydup" 
+do
+    rsync "vbtkey" $dst "iterator_test.go"
+done
+
+# 同步iterator_test
+for dst in "vbtdup" "avl" "avldup" 
+do
+    rsync "vbt" $dst "iterator_test.go"
+done

tree/tree.go

@@ -1,6 +1,6 @@
 package tree
 
-// IBSTreeKey Compare函数可以自定义所以key不一定value, 可以是value结构体中一个属性
+// IBSTreeKey  Compare函数可以自定义所以key不一定value, 可以是value结构体中一个属性
 type IBSTreeKey interface {
 	String() string
 	Size() int
@@ -21,11 +21,23 @@ type IBSTree interface {
 	Clear()
 	// Values 返回先序遍历的值
 	Values() []interface{}
-	Get(key interface{}) (interface{}, bool)
+	Get(value interface{}) (interface{}, bool)
 	Put(value interface{})
 	Traversal(every func(v interface{}) bool, traversalMethod ...interface{})
 }
 
+type IBSTreeDup interface {
+	String() string
+	Size() int
+	Remove(key interface{}) (interface{}, bool)
+	Clear()
+	// Values 返回先序遍历的值
+	Values() []interface{}
+	Get(value interface{}) (interface{}, bool)
+	Put(value interface{}) bool
+	Traversal(every func(v interface{}) bool, traversalMethod ...interface{})
+}
+
 type IBSTreeDupKey interface {
 	String() string
 	Size() int

tree/vbt/iterator_test.go

@@ -0,0 +1,35 @@
+package vbt
+
+import (
+	"sort"
+	"testing"
+
+	"github.com/474420502/focus/compare"
+)
+
+func TestIerator(t *testing.T) {
+	tree := New(compare.Int)
+	l := []int{5, 10, 100, 30, 40, 70, 45, 35, 23}
+	for _, v := range l {
+		tree.Put(v)
+	}
+
+	sort.Ints(l)
+
+	iter := tree.Iterator()
+	iter.ToHead()
+	for i := 0; iter.Next(); i++ {
+
+		if iter.Value() != l[i] {
+			t.Error(iter.Value(), l[i])
+		}
+	}
+	iter.ToTail()
+	iter.Prev()
+	for i := len(l) - 1; iter.Next(); i-- {
+
+		if iter.Value() != l[i] {
+			t.Error(iter.Value(), l[i])
+		}
+	}
+}

tree/vbtdup/iterator.go

@@ -1,4 +1,4 @@
-package vbtkey
+package vbtdup
 
 import (
 	lastack "github.com/474420502/focus/stack/listarraystack"

tree/vbtdup/iterator_test.go

@@ -0,0 +1,35 @@
+package vbtdup
+
+import (
+	"sort"
+	"testing"
+
+	"github.com/474420502/focus/compare"
+)
+
+func TestIerator(t *testing.T) {
+	tree := New(compare.Int)
+	l := []int{5, 10, 100, 30, 40, 70, 45, 35, 23}
+	for _, v := range l {
+		tree.Put(v)
+	}
+
+	sort.Ints(l)
+
+	iter := tree.Iterator()
+	iter.ToHead()
+	for i := 0; iter.Next(); i++ {
+
+		if iter.Value() != l[i] {
+			t.Error(iter.Value(), l[i])
+		}
+	}
+	iter.ToTail()
+	iter.Prev()
+	for i := len(l) - 1; iter.Next(); i-- {
+
+		if iter.Value() != l[i] {
+			t.Error(iter.Value(), l[i])
+		}
+	}
+}

tree/vbtdup/vbtdup_test.go

@@ -0,0 +1,844 @@
+package vbtdup
+
+import (
+	"bytes"
+	"encoding/gob"
+	"io/ioutil"
+	"log"
+	"sort"
+	"testing"
+
+	"github.com/Pallinder/go-randomdata"
+	"github.com/davecgh/go-spew/spew"
+
+	"github.com/474420502/focus/compare"
+)
+
+func loadTestData() []int {
+	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 TestIteratorHeadTail(t *testing.T) {
+	tree := New(compare.Int)
+	l := []int{1, 7, 14, 14, 16, 17, 20, 30, 21, 40, 50, 3, 40, 40, 40, 15, 100}
+	for _, v := range l {
+		tree.Put(v)
+	}
+
+	iter := tree.Iterator()
+	iter.ToHead() // 从小到大
+	iter.Next()
+	if iter.Value() != 1 {
+		t.Error("value error", iter.Value())
+	}
+
+	iter.ToTail()
+	iter.Prev()
+	if iter.Value() != 100 {
+		t.Error("value error", iter.Value())
+	}
+
+	for n := 0; n < 500; n++ {
+		tree := New(compare.Int)
+		var results []int
+		for i := 0; i < 50; i++ {
+			v := randomdata.Number(0, 5000)
+			if ok := tree.Put(v); ok {
+				results = append(results, v)
+			}
+		}
+		result := tree.GetAround(5001)
+
+		iter = tree.Iterator()
+		iter.ToTail()
+		iter.Prev()
+		if iter.Value() != result[0] {
+			t.Error("ToTail error", result, iter.Value())
+		}
+
+		result = tree.GetAround(-1)
+
+		iter.ToHead()
+		iter.Next()
+		if iter.Value() != result[2] {
+			t.Error("ToTail error", result, iter.Value())
+		}
+
+	}
+
+}
+
+func TestLargePushRemove(t *testing.T) {
+	for n := 0; n < 10; n++ {
+		tree := New(compare.Int)
+		var results []int
+		for i := 0; i < 50000; i++ {
+			v := randomdata.Number(0, 100000000)
+			if ok := tree.Put(v); ok {
+				results = append(results, v)
+			}
+
+		}
+
+		if tree.Size() != len(results) {
+			t.Error("Szie error", tree.Size(), len(results))
+		}
+
+		for i := 0; i < len(results)-10; i++ {
+			tree.Remove(results[i])
+		}
+
+		results = results[len(results)-10:]
+		if tree.Size() != 10 {
+			t.Error("Szie error")
+		}
+		sort.Slice(results, func(i, j int) bool {
+			if results[i] < results[j] {
+				return true
+			}
+			return false
+		})
+		if spew.Sprint(results) != spew.Sprint(tree.Values()) {
+			t.Error("tree is error")
+		}
+
+		for i := 0; i < 10; i++ {
+			v1 := results[i]
+			v2, ok := tree.Index(i)
+			if !ok {
+				t.Error("not ok")
+			}
+			if v1 != v2 {
+				t.Error("v1(", v1, ") != v2(", v2, ")??")
+			}
+		}
+
+		tree.Clear()
+		if tree.String() != "VBTree-Dup\nnil" {
+			t.Error("tree String is error")
+		}
+	}
+}
+
+func TestRemoveIndex(t *testing.T) {
+	tree := New(compare.Int)
+	l := []int{7, 14, 14, 14, 16, 1, 40, 15}
+	for _, v := range l {
+		tree.Put(v)
+	}
+
+	// [1 7 14 14 14 15 16 40]
+	var result string
+	result = spew.Sprint(tree.Values())
+	if result != "[1 7 14 15 16 40]" {
+		t.Error("result = ", result, " should be [1 7 14 15 16 40]")
+	}
+
+	tree.RemoveIndex(3)
+	result = spew.Sprint(tree.Values())
+	if result != "[1 7 14 16 40]" {
+		t.Error("result is error")
+	}
+
+	tree.RemoveIndex(-1)
+	result = spew.Sprint(tree.Values())
+	if result != "[1 7 14 16]" {
+		t.Error("result is error")
+	}
+
+	tree.RemoveIndex(0)
+	result = spew.Sprint(tree.Values())
+	if result != "[7 14 16]" {
+		t.Error("result is error")
+	}
+
+	if tree.Size() != 3 {
+		t.Error("size is error")
+	}
+
+	for tree.Size() != 0 {
+		tree.RemoveIndex(0)
+	}
+
+	if tree.root != nil {
+		t.Error("tree roor is not error")
+	}
+}
+
+func TestIndexRange(t *testing.T) {
+	tree := New(compare.Int)
+	l := []int{7, 14, 14, 14, 16, 17, 20, 30, 21, 40, 50, 3, 40, 40, 40, 15}
+	for _, v := range l {
+		tree.Put(v)
+	}
+	// [3 7 14 15 16 17 20 21 30 40 50]
+	// t.Error(tree.Values(), tree.Size())
+	// t.Error(tree.debugString())
+
+	var result string
+	result = spew.Sprint(tree.IndexRange(0, 5))
+	if result != "[3 7 14 15 16 17] true" {
+		t.Error(result)
+	}
+
+	result = spew.Sprint(tree.IndexRange(2, 5))
+	if result != "[14 15 16 17] true" {
+		t.Error(result)
+	}
+
+	result = spew.Sprint(tree.IndexRange(5, 100))
+	if result != "[17 20 21 30 40 50] false" {
+		t.Error(result)
+	}
+
+	result = spew.Sprint(tree.IndexRange(10, 0)) // size = 11, index max = 10
+	if result != "[50 40 30 21 20 17 16 15 14 7 3] true" {
+		t.Error(result)
+	}
+
+	result = spew.Sprint(tree.IndexRange(11, 0)) // size = 11, index max = 10
+	if result != "[50 40 30 21 20 17 16 15 14 7 3] false" {
+		t.Error(result)
+	}
+
+	result = spew.Sprint(tree.IndexRange(4, 1)) // size = 11, index max = 10
+	if result != "[16 15 14 7] true" {
+		t.Error(result)
+	}
+
+	result = spew.Sprint(tree.IndexRange(-1, -5)) // size = 11, index max = 10
+	if result != "[50 40 30 21 20] true" {
+		t.Error(result)
+	}
+
+	result = spew.Sprint(tree.IndexRange(-1, -11)) // size = 11, index max = 0 - 10 (-1,-11)
+	if result != "[50 40 30 21 20 17 16 15 14 7 3] true" {
+		t.Error(result)
+	}
+
+	result = spew.Sprint(tree.IndexRange(-1, -12)) // size = 11, index max = 0 - 10 (-1,-11)
+	if result != "[50 40 30 21 20 17 16 15 14 7 3] false" {
+		t.Error(result)
+	}
+
+	result = spew.Sprint(tree.IndexRange(-5, -1)) // size = 11, index max = 0 - 10 (-1,-11)
+	if result != "[20 21 30 40 50] true" {
+		t.Error(result)
+	}
+
+	// [3 7 14 15 16 17 20 21 30 40 50]
+	result = spew.Sprint(tree.IndexRange(-5, 5)) //
+	if result != "[20 17] true" {
+		t.Error(result)
+	}
+
+	result = spew.Sprint(tree.IndexRange(5, -5)) //
+	if result != "[17 20] true" {
+		t.Error(result)
+	}
+
+	result = spew.Sprint(tree.IndexRange(-1, 6)) //
+	if result != "[50 40 30 21 20] true" {
+		t.Error(result)
+	}
+
+}
+
+func TestGetAround(t *testing.T) {
+	tree := New(compare.Int)
+	for _, v := range []int{7, 14, 14, 14, 16, 17, 20, 30, 21, 40, 50, 3, 40, 40, 40, 15} {
+		tree.Put(v)
+	}
+
+	var Result string
+
+	Result = spew.Sprint(tree.GetAround(17))
+	if Result != "[16 17 20]" {
+		t.Error(tree.Values())
+		t.Error("17 is root, tree.GetAround(17)) is error", Result)
+		t.Error(tree.debugString())
+	}
+
+	Result = spew.Sprint(tree.GetAround(3))
+	if Result != "[<nil> 3 7]" {
+		t.Error(tree.Values())
+		t.Error("tree.GetAround(3)) is error", Result)
+		t.Error(tree.debugString())
+	}
+
+	Result = spew.Sprint(tree.GetAround(40))
+	if Result != "[30 40 50]" {
+		t.Error(tree.Values())
+		t.Error("tree.GetAround(40)) is error", Result)
+		t.Error(tree.debugString())
+	}
+
+	Result = spew.Sprint(tree.GetAround(50))
+	if Result != "[40 50 <nil>]" {
+		t.Error(tree.Values())
+		t.Error("tree.GetAround(50)) is error", Result)
+		t.Error(tree.debugString())
+	}
+
+	Result = spew.Sprint(tree.GetAround(18))
+	if Result != "[17 <nil> 20]" {
+		t.Error(tree.Values())
+		t.Error("18 is not in list, tree.GetAround(18)) is error", Result)
+		t.Error(tree.debugString())
+	}
+
+	Result = spew.Sprint(tree.GetAround(5))
+	if Result != "[3 <nil> 7]" {
+		t.Error(tree.Values())
+		t.Error("5 is not in list, tree.GetAround(5)) is error", Result)
+		t.Error(tree.debugString())
+	}
+
+	Result = spew.Sprint(tree.GetAround(2))
+	if Result != "[<nil> <nil> 3]" {
+		t.Error(tree.Values())
+		t.Error("2 is not in list, tree.GetAround(2)) is error", Result)
+		t.Error(tree.debugString())
+	}
+
+	Result = spew.Sprint(tree.GetAround(100))
+	if Result != "[50 <nil> <nil>]" {
+		t.Error(tree.Values())
+		t.Error("50 is not in list, tree.GetAround(50)) is error", Result)
+		t.Error(tree.debugString())
+	}
+
+}
+
+// // for test error case
+
+// func TestPutComparatorRandom(t *testing.T) {
+
+// 	for n := 0; n < 300000; n++ {
+// 		tree := New(compare.Int)
+// 		godsavl := avltree.NewWithIntComparator()
+
+// 		content := ""
+// 		m := make(map[int]int)
+// 		for i := 0; len(m) < 10; i++ {
+// 			v := randomdata.Number(0, 65535)
+// 			if _, ok := m[v]; !ok {
+// 				m[v] = v
+// 				content += spew.Sprint(v) + ","
+// 				tree.Put(v, v)
+// 				godsavl.Put(v, v)
+// 			}
+// 		}
+
+// 		s1 := spew.Sprint(tree.Values())
+// 		s2 := spew.Sprint(godsavl.Values())
+
+// 		if s1 != s2 {
+// 			t.Error(godsavl.String())
+// 			t.Error(tree.debugString())
+// 			t.Error(content, n)
+// 			break
+// 		}
+// 	}
+// }
+
+func TestGet(t *testing.T) {
+	tree := New(compare.Int)
+	for _, v := range []int{2383, 7666, 3055, 39016, 57092, 27897, 36513, 1562, 22574, 23202} {
+		tree.Put(v)
+	}
+
+	for _, v := range []int{2383, 7666, 3055, 39016, 57092, 27897, 36513, 1562, 22574, 23202} {
+		v, ok := tree.Get(v)
+		if !ok {
+			t.Error("the val not found ", v)
+		}
+	}
+
+	if v, ok := tree.Get(10000); ok {
+		t.Error("the val(1000) is not in tree, but is found", v)
+	}
+}
+
+func TestDupGetRange(t *testing.T) {
+	tree := New(compare.Int)
+	for _, v := range []int{5, 10, 13, 5, 17, 1, 2, 10, 40, 30, 1} {
+		tree.Put(v)
+	}
+
+	result := tree.GetRange(0, 20)
+	if spew.Sprint(result) != "[1 2 5 10 13 17]" {
+		t.Error(result)
+	}
+
+	result = tree.GetRange(0, 8)
+	if spew.Sprint(result) != "[1 2 5]" {
+		t.Error(result)
+	}
+
+	result = tree.GetRange(-5, -1)
+	if spew.Sprint(result) != "[]" {
+		t.Error(result)
+	}
+
+	result = tree.GetRange(7, 20)
+	if spew.Sprint(result) != "[10 13 17]" {
+		t.Error(result)
+	}
+
+	result = tree.GetRange(30, 40)
+	if spew.Sprint(result) != "[30 40]" {
+		t.Error(result)
+	}
+
+	result = tree.GetRange(30, 60)
+	if spew.Sprint(result) != "[30 40]" {
+		t.Error(result)
+	}
+
+	result = tree.GetRange(40, 40)
+	if spew.Sprint(result) != "[40]" {
+		t.Error(result)
+	}
+
+	result = tree.GetRange(50, 60)
+	if spew.Sprint(result) != "[]" {
+		t.Error(result)
+	}
+
+	result = tree.GetRange(50, 1)
+	if spew.Sprint(result) != "[40 30 17 13 10 5 2 1]" {
+		t.Error(result)
+	}
+
+	result = tree.GetRange(30, 20)
+	if spew.Sprint(result) != "[30]" {
+		t.Error(result)
+	}
+
+}
+
+func TestGetRange(t *testing.T) {
+	tree := New(compare.Int)
+	for _, v := range []int{5, 6, 8, 10, 13, 17, 1, 2, 40, 30} {
+		tree.Put(v)
+	}
+
+	// t.Error(tree.debugString())
+	// t.Error(tree.getArountNode(20))
+	// t.Error(tree.Values())
+
+	result := tree.GetRange(0, 20)
+	if spew.Sprint(result) != "[1 2 5 6 8 10 13 17]" {
+		t.Error(result)
+	}
+
+	result = tree.GetRange(-5, -1)
+	if spew.Sprint(result) != "[]" {
+		t.Error(result)
+	}
+
+	result = tree.GetRange(7, 20)
+	if spew.Sprint(result) != "[8 10 13 17]" {
+		t.Error(result)
+	}
+
+	result = tree.GetRange(30, 40)
+	if spew.Sprint(result) != "[30 40]" {
+		t.Error(result)
+	}
+
+	result = tree.GetRange(30, 60)
+	if spew.Sprint(result) != "[30 40]" {
+		t.Error(result)
+	}
+
+	result = tree.GetRange(40, 40)
+	if spew.Sprint(result) != "[40]" {
+		t.Error(result)
+	}
+
+	result = tree.GetRange(50, 60)
+	if spew.Sprint(result) != "[]" {
+		t.Error(result)
+	}
+
+	result = tree.GetRange(50, 1)
+	if spew.Sprint(result) != "[40 30 17 13 10 8 6 5 2 1]" {
+		t.Error(result)
+	}
+
+	result = tree.GetRange(30, 20)
+	if spew.Sprint(result) != "[30]" {
+		t.Error(result)
+	}
+
+}
+
+func TestTravalsal(t *testing.T) {
+	tree := New(compare.Int)
+	for _, v := range []int{5, 6, 8, 10, 13, 17, 1, 2, 40, 30} {
+		tree.Put(v)
+	}
+
+	i := 0
+	var result []interface{}
+	tree.Traversal(func(v interface{}) bool {
+		result = append(result, v)
+		i++
+		if i >= 10 {
+			return false
+		}
+		return true
+	})
+
+	if spew.Sprint(result) != "[1 2 5 6 8 10 13 17 30 40]" {
+		t.Error(result)
+	}
+
+}
+
+// func TestRemoveAll(t *testing.T) {
+// ALL:
+// 	for c := 0; c < 5000; c++ {
+// 		tree := New(compare.Int)
+// 		gods := avltree.NewWithIntComparator()
+// 		var l []int
+// 		m := make(map[int]int)
+
+// 		for i := 0; len(l) < 50; i++ {
+// 			v := randomdata.Number(0, 100000)
+// 			if _, ok := m[v]; !ok {
+// 				m[v] = v
+// 				l = append(l, v)
+// 				tree.Put(v, v)
+// 				gods.Put(v, v)
+// 			}
+// 		}
+
+// 		for i := 0; i < 50; i++ {
+
+// 			tree.Remove(l[i])
+// 			gods.Remove(l[i])
+
+// 			s1 := spew.Sprint(tree.Values())
+// 			s2 := spew.Sprint(gods.Values())
+// 			if s1 != s2 {
+// 				t.Error("avl remove error", "avlsize = ", tree.Size())
+// 				t.Error(tree.root, i, l[i])
+// 				t.Error(s1)
+// 				t.Error(s2)
+// 				break ALL
+// 			}
+// 		}
+// 	}
+// }
+
+// func TestRemove(t *testing.T) {
+
+// ALL:
+// 	for N := 0; N < 5000; N++ {
+// 		tree := New(compare.Int)
+// 		gods := avltree.NewWithIntComparator()
+
+// 		var l []int
+// 		m := make(map[int]int)
+
+// 		for i := 0; len(l) < 20; i++ {
+// 			v := randomdata.Number(0, 100)
+// 			if _, ok := m[v]; !ok {
+// 				l = append(l, v)
+// 				m[v] = v
+// 				tree.Put(v, v)
+// 				gods.Put(v, v)
+// 			}
+// 		}
+
+// 		src1 := tree.String()
+// 		src2 := gods.String()
+
+// 		for i := 0; i < 20; i++ {
+// 			tree.Remove(l[i])
+// 			gods.Remove(l[i])
+// 			if tree.root != nil && spew.Sprint(gods.Values()) != spew.Sprint(tree.Values()) {
+// 				t.Error(src1)
+// 				t.Error(src2)
+// 				t.Error(tree.debugString())
+// 				t.Error(gods.String())
+// 				t.Error(l[i])
+// 				break ALL
+// 			}
+// 		}
+// 	}
+// }
+
+// func BenchmarkGetRange(b *testing.B) {
+
+// }
+
+// func BenchmarkIndexRange(b *testing.B) {
+// 	tree := New(compare.Int)
+// 	l := loadTestData()
+// 	b.N = len(l)
+
+// 	for _, v := range l {
+// 		tree.Put(v, v)
+// 	}
+
+// 	b.ResetTimer()
+// 	b.StartTimer()
+
+// 	execCount := 5
+// 	b.N = len(l) * execCount
+
+// 	for i := 0; i < execCount; i++ {
+// 		for range l {
+// 			tree.IndexRange(i, i+49)
+// 		}
+// 	}
+// }
+
+// func BenchmarkSkipListGet(b *testing.B) {
+// 	sl := skiplist.New(skiplist.Int)
+// 	l := loadTestData()
+// 	b.N = len(l)
+
+// 	for _, v := range l {
+// 		sl.Set(v, v)
+// 	}
+
+// 	b.ResetTimer()
+// 	b.StartTimer()
+
+// 	execCount := 5
+// 	b.N = len(l) * execCount
+
+// 	for i := 0; i < execCount; i++ {
+// 		for _, v := range l {
+// 			sl.Get(v)
+// 			// e := sl.Get(v)
+// 			// var result [50]interface{}
+// 			// for i := 0; i < 50 && e != nil; i++ {
+// 			// 	result[i] = e.Value
+// 			// 	e = e.Next()
+// 			// }
+// 		}
+// 	}
+// }
+
+// func BenchmarkSkipListSet(b *testing.B) {
+
+// 	l := loadTestData()
+// 	execCount := 1
+// 	b.N = len(l) * execCount
+// 	for i := 0; i < execCount; i++ {
+// 		sl := skiplist.New(skiplist.Int)
+// 		for _, v := range l {
+// 			sl.Set(v, v)
+// 		}
+// 	}
+// }
+
+// func BenchmarkIterator(b *testing.B) {
+// 	tree := New(compare.Int)
+
+// 	l := loadTestData()
+// 	b.N = len(l)
+
+// 	for _, v := range l {
+// 		tree.Put(v, v)
+// 	}
+
+// 	b.ResetTimer()
+// 	b.StartTimer()
+// 	iter := tree.Iterator()
+// 	b.N = 0
+// 	for iter.Next() {
+// 		b.N++
+// 	}
+// 	for iter.Prev() {
+// 		b.N++
+// 	}
+// 	for iter.Next() {
+// 		b.N++
+// 	}
+// 	b.Log(b.N, len(l))
+// }
+
+// func BenchmarkRemove(b *testing.B) {
+// 	tree := New(compare.Int)
+
+// 	l := loadTestData()
+
+// 	b.N = len(l)
+// 	for _, v := range l {
+// 		tree.Put(v, v)
+// 	}
+
+// 	b.ResetTimer()
+// 	b.StartTimer()
+
+// 	for i := 0; i < len(l); i++ {
+// 		tree.Remove(l[i])
+// 	}
+// }
+
+// func BenchmarkGodsRemove(b *testing.B) {
+// 	tree := avltree.NewWithIntComparator()
+
+// 	l := loadTestData()
+
+// 	b.N = len(l)
+// 	for _, v := range l {
+// 		tree.Put(v, v)
+// 	}
+
+// 	b.ResetTimer()
+// 	b.StartTimer()
+
+// 	for i := 0; i < len(l); i++ {
+// 		tree.Remove(l[i])
+// 	}
+// }
+
+// func BenchmarkGodsRBRemove(b *testing.B) {
+// 	tree := redblacktree.NewWithIntComparator()
+
+// 	l := loadTestData()
+
+// 	b.N = len(l)
+// 	for _, v := range l {
+// 		tree.Put(v, v)
+// 	}
+
+// 	b.ResetTimer()
+// 	b.StartTimer()
+
+// 	for i := 0; i < len(l); i++ {
+// 		tree.Remove(l[i])
+// 	}
+// }
+
+// func BenchmarkGet(b *testing.B) {
+
+// 	tree := New(compare.Int)
+
+// 	l := loadTestData()
+// 	b.N = len(l)
+// 	for i := 0; i < b.N; i++ {
+// 		tree.Put(l[i], i)
+// 	}
+
+// 	b.ResetTimer()
+// 	b.StartTimer()
+
+// 	execCount := 10
+// 	b.N = len(l) * execCount
+
+// 	for i := 0; i < execCount; i++ {
+// 		for _, v := range l {
+// 			tree.Get(v)
+// 		}
+// 	}
+// }
+
+// func BenchmarkGodsRBGet(b *testing.B) {
+// 	tree := redblacktree.NewWithIntComparator()
+
+// 	l := loadTestData()
+// 	b.N = len(l)
+// 	for i := 0; i < b.N; i++ {
+// 		tree.Put(l[i], i)
+// 	}
+
+// 	b.ResetTimer()
+// 	b.StartTimer()
+
+// 	execCount := 10
+// 	b.N = len(l) * execCount
+
+// 	for i := 0; i < execCount; i++ {
+// 		for _, v := range l {
+// 			tree.Get(v)
+// 		}
+// 	}
+// }
+
+// func BenchmarkGodsAvlGet(b *testing.B) {
+// 	tree := avltree.NewWithIntComparator()
+
+// 	l := loadTestData()
+// 	b.N = len(l)
+// 	for i := 0; i < b.N; i++ {
+// 		tree.Put(l[i], i)
+// 	}
+
+// 	b.ResetTimer()
+// 	b.StartTimer()
+
+// 	execCount := 10
+// 	b.N = len(l) * execCount
+
+// 	for i := 0; i < execCount; i++ {
+// 		for _, v := range l {
+// 			tree.Get(v)
+// 		}
+// 	}
+// }
+
+// func BenchmarkPut(b *testing.B) {
+// 	l := loadTestData()
+
+// 	b.ResetTimer()
+// 	b.StartTimer()
+
+// 	execCount := 50
+// 	b.N = len(l) * execCount
+// 	for i := 0; i < execCount; i++ {
+// 		tree := New(compare.Int)
+// 		for _, v := range l {
+// 			tree.Put(v, v)
+// 		}
+// 	}
+// }
+
+// func TestPutStable(t *testing.T) {
+
+// }
+
+// func BenchmarkGodsRBPut(b *testing.B) {
+// 	l := loadTestData()
+
+// 	b.ResetTimer()
+// 	b.StartTimer()
+
+// 	execCount := 50
+// 	b.N = len(l) * execCount
+// 	for i := 0; i < execCount; i++ {
+// 		tree := redblacktree.NewWithIntComparator()
+// 		for _, v := range l {
+// 			tree.Put(v, v)
+// 		}
+// 	}
+// }
+
+// func BenchmarkGodsPut(b *testing.B) {
+// 	tree := avltree.NewWithIntComparator()
+
+// 	l := loadTestData()
+
+// 	b.ResetTimer()
+// 	b.StartTimer()
+
+// 	b.N = len(l)
+// 	for _, v := range l {
+// 		tree.Put(v, v)
+// 	}
+// }

tree/vbtkey/iterator_test.go

@@ -0,0 +1,35 @@
+package vbtkey
+
+import (
+	"sort"
+	"testing"
+
+	"github.com/474420502/focus/compare"
+)
+
+func TestIerator(t *testing.T) {
+	tree := New(compare.Int)
+	l := []int{5, 10, 100, 30, 40, 70, 45, 35, 23}
+	for _, v := range l {
+		tree.Put(v, v)
+	}
+
+	sort.Ints(l)
+
+	iter := tree.Iterator()
+	iter.ToHead()
+	for i := 0; iter.Next(); i++ {
+
+		if iter.Value() != l[i] {
+			t.Error(iter.Value(), l[i])
+		}
+	}
+	iter.ToTail()
+	iter.Prev()
+	for i := len(l) - 1; iter.Next(); i-- {
+
+		if iter.Value() != l[i] {
+			t.Error(iter.Value(), l[i])
+		}
+	}
+}

tree/vbtkey/vbtkey.go

@@ -27,6 +27,7 @@ func (n *Node) String() string {
 	return spew.Sprint(n.value) + "(" + p + "|" + spew.Sprint(n.size) + ")"
 }
 
+// Tree increasing
 type Tree struct {
 	root    *Node
 	Compare compare.Compare
@@ -43,7 +44,7 @@ func New(Compare compare.Compare) *Tree {
 }
 
 func (tree *Tree) String() string {
-	str := "AVLTree\n"
+	str := "VBTree-Key\n"
 	if tree.root == nil {
 		return str + "nil"
 	}
@@ -347,7 +348,7 @@ func (tree *Tree) getArountNode(key interface{}) (result [3]*Node) {
 
 	for n := tree.root; n != nil; {
 		last = n
-		c := tree.Compare(key, n.value)
+		c := tree.Compare(key, n.key)
 		switch c {
 		case -1:
 			n = n.children[0]

tree/vbtkey/vbtkey_test.go

@@ -66,7 +66,7 @@ func TestLargePushRemove(t *testing.T) {
 		}
 
 		tree.Clear()
-		if tree.String() != "AVLTree\nnil" {
+		if tree.String() != "VBTree-Key\nnil" {
 			t.Error("tree String is error")
 		}
 	}

tree/vbtkeydup/iterator.go

@@ -0,0 +1,252 @@
+package vbtkeydup
+
+import (
+	lastack "github.com/474420502/focus/stack/listarraystack"
+)
+
+type Iterator struct {
+	dir    int
+	up     *Node
+	cur    *Node
+	tstack *lastack.Stack
+	// curnext *Node
+}
+
+func initIterator(avltree *Tree) *Iterator {
+	iter := &Iterator{tstack: lastack.New()}
+	iter.up = avltree.root
+	return iter
+}
+
+func NewIterator(n *Node) *Iterator {
+	iter := &Iterator{tstack: lastack.New()}
+	iter.up = n
+	return iter
+}
+
+func NewIteratorWithCap(n *Node, cap int) *Iterator {
+	iter := &Iterator{tstack: lastack.NewWithCap(cap)}
+	iter.up = n
+	return iter
+}
+
+func (iter *Iterator) GetNode() *Node {
+	return iter.cur
+}
+
+func (iter *Iterator) ToHead() {
+	if iter.cur == nil {
+		iter.cur = iter.up
+	}
+
+	for iter.cur.parent != nil {
+		iter.cur = iter.cur.parent
+	}
+
+	for iter.cur.children[0] != nil {
+		iter.cur = iter.cur.children[0]
+	}
+	iter.SetNode(iter.cur)
+	iter.cur = nil
+}
+
+func (iter *Iterator) ToTail() {
+
+	if iter.cur == nil {
+		iter.cur = iter.up
+	}
+
+	for iter.cur.parent != nil {
+		iter.cur = iter.cur.parent
+	}
+
+	for iter.cur.children[1] != nil {
+		iter.cur = iter.cur.children[1]
+	}
+	iter.SetNode(iter.cur)
+	iter.cur = nil
+}
+
+func (iter *Iterator) SetNode(n *Node) {
+	iter.up = n
+	iter.dir = 0
+	iter.tstack.Clear()
+}
+
+func (iter *Iterator) Key() interface{} {
+	return iter.cur.key
+}
+
+func (iter *Iterator) Value() interface{} {
+	return iter.cur.value
+}
+
+func (iter *Iterator) GetNext(cur *Node, idx int) *Node {
+
+	// iter := NewIterator(cur)
+	iter.SetNode(cur)
+	iter.curPushNextStack(iter.up)
+	iter.up = iter.getNextUp(iter.up)
+
+	for i := 0; i < idx; i++ {
+
+		if iter.tstack.Size() == 0 {
+			if iter.up == nil {
+				return nil
+			}
+			iter.tstack.Push(iter.up)
+			iter.up = iter.getNextUp(iter.up)
+		}
+
+		if v, ok := iter.tstack.Pop(); ok {
+			iter.cur = v.(*Node)
+			if i == idx-1 {
+				return iter.cur
+			}
+			iter.curPushNextStack(iter.cur)
+		} else {
+			return nil
+		}
+	}
+
+	return cur
+}
+
+func (iter *Iterator) Next() (result bool) {
+
+	if iter.dir > -1 {
+		if iter.dir == 1 && iter.cur != nil {
+			iter.tstack.Clear()
+			iter.curPushNextStack(iter.cur)
+			iter.up = iter.getNextUp(iter.cur)
+		}
+		iter.dir = -1
+	}
+
+	if iter.tstack.Size() == 0 {
+		if iter.up == nil {
+			return false
+		}
+		iter.tstack.Push(iter.up)
+		iter.up = iter.getNextUp(iter.up)
+	}
+
+	if v, ok := iter.tstack.Pop(); ok {
+		iter.cur = v.(*Node)
+		iter.curPushNextStack(iter.cur)
+		return true
+	}
+
+	return false
+}
+func (iter *Iterator) GetPrev(cur *Node, idx int) *Node {
+
+	// iter := NewIterator(cur)
+	iter.SetNode(cur)
+	iter.curPushPrevStack(iter.up)
+	iter.up = iter.getPrevUp(iter.up)
+
+	for i := 0; i < idx; i++ {
+
+		if iter.tstack.Size() == 0 {
+			if iter.up == nil {
+				return nil
+			}
+			iter.tstack.Push(iter.up)
+			iter.up = iter.getPrevUp(iter.up)
+		}
+
+		if v, ok := iter.tstack.Pop(); ok {
+			iter.cur = v.(*Node)
+			if i == idx-1 {
+				return iter.cur
+			}
+			iter.curPushPrevStack(iter.cur)
+		} else {
+			return nil
+		}
+	}
+
+	return cur
+}
+
+func (iter *Iterator) Prev() (result bool) {
+
+	if iter.dir < 1 { // 非 1(next 方向定义 -1 为 prev)
+		if iter.dir == -1 && iter.cur != nil { // 如果上次为prev方向, 则清空辅助计算的栈
+			iter.tstack.Clear()
+			iter.curPushPrevStack(iter.cur)    // 把当前cur计算的回朔
+			iter.up = iter.getPrevUp(iter.cur) // cur 寻找下个要计算up
+		}
+		iter.dir = 1
+	}
+
+	// 如果栈空了, 把up的递归计算入栈, 重新计算 下次的up值
+	if iter.tstack.Size() == 0 {
+		if iter.up == nil {
+			return false
+		}
+		iter.tstack.Push(iter.up)
+		iter.up = iter.getPrevUp(iter.up)
+	}
+
+	if v, ok := iter.tstack.Pop(); ok {
+		iter.cur = v.(*Node)
+		iter.curPushPrevStack(iter.cur)
+		return true
+	}
+
+	// 如果再次计算的栈为空, 则只能返回false
+	return false
+}
+
+func getRelationship(cur *Node) int {
+	if cur.parent.children[1] == cur {
+		return 1
+	}
+	return 0
+}
+
+func (iter *Iterator) getPrevUp(cur *Node) *Node {
+	for cur.parent != nil {
+		if getRelationship(cur) == 1 { // next 在 降序 小值. 如果child在右边, parent 比 child 小, parent才有效, 符合降序
+			return cur.parent
+		}
+		cur = cur.parent
+	}
+	return nil
+}
+
+func (iter *Iterator) curPushPrevStack(cur *Node) {
+	Prev := cur.children[0] // 当前的左然后向右找, 找到最大, 就是最接近cur 并且小于cur的值
+
+	if Prev != nil {
+		iter.tstack.Push(Prev)
+		for Prev.children[1] != nil {
+			Prev = Prev.children[1]
+			iter.tstack.Push(Prev) // 入栈 用于回溯
+		}
+	}
+}
+
+func (iter *Iterator) getNextUp(cur *Node) *Node {
+	for cur.parent != nil {
+		if getRelationship(cur) == 0 { // Prev 在 降序 大值. 如果child在左边, parent 比 child 大, parent才有效 , 符合降序
+			return cur.parent
+		}
+		cur = cur.parent
+	}
+	return nil
+}
+
+func (iter *Iterator) curPushNextStack(cur *Node) {
+	next := cur.children[1]
+
+	if next != nil {
+		iter.tstack.Push(next)
+		for next.children[0] != nil {
+			next = next.children[0]
+			iter.tstack.Push(next)
+		}
+	}
+}

tree/vbtkeydup/iterator_test.go

@@ -0,0 +1,35 @@
+package vbtkeydup
+
+import (
+	"sort"
+	"testing"
+
+	"github.com/474420502/focus/compare"
+)
+
+func TestIerator(t *testing.T) {
+	tree := New(compare.Int)
+	l := []int{5, 10, 100, 30, 40, 70, 45, 35, 23}
+	for _, v := range l {
+		tree.Put(v, v)
+	}
+
+	sort.Ints(l)
+
+	iter := tree.Iterator()
+	iter.ToHead()
+	for i := 0; iter.Next(); i++ {
+
+		if iter.Value() != l[i] {
+			t.Error(iter.Value(), l[i])
+		}
+	}
+	iter.ToTail()
+	iter.Prev()
+	for i := len(l) - 1; iter.Next(); i-- {
+
+		if iter.Value() != l[i] {
+			t.Error(iter.Value(), l[i])
+		}
+	}
+}

tree/vbtkeydup/vbtdupkey.go

@@ -1,4 +1,4 @@
-package vbtkey
+package vbtkeydup
 
 import (
 	"github.com/davecgh/go-spew/spew"
@@ -347,7 +347,7 @@ func (tree *Tree) getArountNode(key interface{}) (result [3]*Node) {
 
 	for n := tree.root; n != nil; {
 		last = n
-		c := tree.Compare(key, n.value)
+		c := tree.Compare(key, n.key)
 		switch c {
 		case -1:
 			n = n.children[0]

tree/vbtkeydup/vbtdupkey_test.go

@@ -1,4 +1,4 @@
-package vbtkey
+package vbtkeydup
 
 import (
 	"bytes"