diff --git a/collections/list/array_list.go b/collections/list/array_list.go
index 37c2daa..086b582 100644
--- a/collections/list/array_list.go
+++ b/collections/list/array_list.go
@@ -16,13 +16,32 @@ type ArrayList[T any] struct {
 
 func NewArrayList[T any](elems ...T) *ArrayList[T] {
 	minCap := minCapacity
+
+	size := len(elems)
+	for minCap < size {
+		minCap <<= 1
+	}
+
+	var tail int = size
 	var buf []T
 
-	return &ArrayList[T]{
-		buf:    buf,
-		minCap: minCap,
-		list:   list[T]{locker: locker.EmptyLocker},
+	if len(elems) > 0 {
+		buf = make([]T, minCap)
+		copy(buf, elems)
 	}
+
+	l := &ArrayList[T]{
+		list:   list[T]{size: size, locker: locker.EmptyLocker},
+		buf:    buf,
+		tail:   tail,
+		minCap: minCap,
+	}
+
+	// for _, v := range elems {
+	// 	l.PushBack(v)
+	// }
+
+	return l
 }
 
 func (l *ArrayList[T]) PushFront(v T) {
diff --git a/collections/list/array_list_test.go b/collections/list/array_list_test.go
index acdc097..3dcffb3 100644
--- a/collections/list/array_list_test.go
+++ b/collections/list/array_list_test.go
@@ -7,9 +7,12 @@ import (
 )
 
 func TestNewArrayList(t *testing.T) {
-	l := list.NewArrayList[int]()
+	l := list.NewArrayList(1, 2, 3)
+
+	l.ForEach(func(i int) {
+		t.Log(i)
+	})
 
-	_ = l
 }
 
 func TestArrayPushBack(t *testing.T) {
diff --git a/collections/list/linked_list.go b/collections/list/linked_list.go
index 8599c68..4240f77 100644
--- a/collections/list/linked_list.go
+++ b/collections/list/linked_list.go
@@ -16,10 +16,9 @@ type LinkedNode[T any] struct {
 
 // NewLinkedList 初始化链表
 func NewLinkedList[T any](elems ...T) *LinkedList[T] {
-	l :=
-		&LinkedList[T]{
-			list: list[T]{locker: locker.EmptyLocker},
-		}
+	l := &LinkedList[T]{
+		list: list[T]{locker: locker.EmptyLocker},
+	}
 
 	for _, e := range elems {
 		l.pushBackNode(&LinkedNode[T]{Value: e})
@@ -29,12 +28,18 @@ func NewLinkedList[T any](elems ...T) *LinkedList[T] {
 }
 
 func (l *LinkedList[T]) PushBack(v T) *LinkedList[T] {
+	l.locker.Lock()
+	defer l.locker.Unlock()
+
 	l.pushBackNode(&LinkedNode[T]{Value: v})
 
 	return l
 }
 
 func (l *LinkedList[T]) PushFront(v T) *LinkedList[T] {
+	l.locker.Lock()
+	defer l.locker.Unlock()
+
 	l.pushFrontNode(&LinkedNode[T]{Value: v})
 
 	return l
@@ -130,9 +135,6 @@ func (l *LinkedList[T]) RemoveAt(index int) {
 }
 
 func (l *LinkedList[T]) pushBackNode(n *LinkedNode[T]) {
-	l.locker.Lock()
-	defer l.locker.Unlock()
-
 	n.Next = nil
 	n.Prev = l.tail
 
@@ -148,9 +150,6 @@ func (l *LinkedList[T]) pushBackNode(n *LinkedNode[T]) {
 }
 
 func (l *LinkedList[T]) pushFrontNode(n *LinkedNode[T]) {
-	l.locker.Lock()
-	defer l.locker.Unlock()
-
 	n.Next = l.front
 	n.Prev = nil
 	if l.front != nil {