code refactoring

server/internal/stack.go

@@ -1,37 +1,33 @@
 package internal
 
-type Node[T any] struct {
-	Value T
-}
-
 type Stack[T any] struct {
-	Nodes []*Node[T]
-	count int
+	Elements []*T
+	count    int
 }
 
 func NewStack[T any]() *Stack[T] {
 	return &Stack[T]{
-		Nodes: make([]*Node[T], 10),
+		Elements: make([]*T, 10),
 	}
 }
 
 func (s *Stack[T]) Push(val T) {
-	if s.count >= len(s.Nodes) {
-		Nodes := make([]*Node[T], len(s.Nodes)*2)
-		copy(Nodes, s.Nodes)
-		s.Nodes = Nodes
+	if s.count >= len(s.Elements) {
+		Elements := make([]*T, len(s.Elements)*2)
+		copy(Elements, s.Elements)
+		s.Elements = Elements
 	}
-	s.Nodes[s.count] = &Node[T]{Value: val}
+	s.Elements[s.count] = &val
 	s.count++
 }
 
-func (s *Stack[T]) Pop() *Node[T] {
+func (s *Stack[T]) Pop() *T {
 	if s.count == 0 {
 		return nil
 	}
-	node := s.Nodes[s.count-1]
+	Element := s.Elements[s.count-1]
 	s.count--
-	return node
+	return Element
 }
 
 func (s *Stack[T]) IsEmpty() bool {