type Stack struct {
list []interface{}
}
func NewStack() *Stack{
return new(Stack)
}
func (s *Stack) Push(value interface{}) {
s.list = append(s.list, value)
}
func (s *Stack) Pop () interface{}{
len := len(s.list)
var value interface{}
if len==0 {
return nil
}else if len==1{
value = s.list[0]
s.list = []interface{}{}
}else{
value = s.list[len-1]
s.list = s.list[len-2:len-1]
}
return value
}
func (s *Stack) Print() {
for _,v := range s.list {
fmt.Printf("%v",v)
}
fmt.Printf("\n")
}
func main(){
stack := NewStack()
stack.Push(1)
stack.Push(2)
res1:= stack.Pop()
res2:= stack.Pop()
res3:= stack.Pop()
fmt.Println(res1,res2,res3)
}
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