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arraystack.go
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59 lines (48 loc) · 933 Bytes
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package stack
import (
"container/list"
"fmt"
)
type ArrayStack struct {
list *list.List
}
func InitStack() *ArrayStack {
_list := list.New()
return &ArrayStack{_list}
}
func (stack *ArrayStack) Push(value interface{}) {
stack.list.PushBack(value)
}
func (stack *ArrayStack) Pop() interface{} {
e := stack.list.Back()
if e != nil {
stack.list.Remove(e)
return e.Value
}
return nil
}
// 获取栈顶
func (stack *ArrayStack) Peak() interface{} {
e := stack.list.Back()
if e != nil {
return e.Value
}
return nil
}
func (stack *ArrayStack) Len() int {
return stack.list.Len()
}
func (stack *ArrayStack) IsEmpty() bool {
return stack.list.Len() == 0
}
func main() {
stack := InitStack()
fmt.Println(stack.IsEmpty())
stack.Push("czk")
fmt.Println(stack.Peak())
fmt.Println(stack.Len())
fmt.Println(stack.IsEmpty())
fmt.Println(stack.Pop())
fmt.Println(stack.Len())
fmt.Println(stack.IsEmpty())
}