linkedlist

type ICircular interface {
	AddToStart(data int)
	AddToSequentially(data int)
	AddToAfter(data, which int)
	AddToEnd(data int)
	Delete(data int) error
	List() []int
	Print()
}

type IDouble interface {
	AddToStart(data int)
	AddToSequentially(data int)
	AddToAfter(data, which int)
	AddToEnd(data int)
	Delete(data int) error
	List(reverse bool) []int
	Print(reverse bool)
}

type ILinear interface {
	AddToStart(data int)
	AddToSequentially(data int)
	AddToAfter(data, which int) error
	AddToEnd(data int)
	Delete(data int) error
	Search(data int) bool
	List() []int
	Print()
}