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list.go
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/
list.go
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/*
* Copyright 2015 Xuyuan Pang
* Author: Xuyuan Pang
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package common
import "container/list"
type container interface {
Push(interface{})
Pop() interface{}
Len() int
Reset()
}
type Stack interface {
container
}
func NewStack() Stack {
return &stack{list.New()}
}
type stack struct {
*list.List
}
func (s *stack) Push(v interface{}) {
s.List.PushBack(v)
}
func (s *stack) Pop() interface{} {
e := s.Back()
if e != nil {
s.Remove(e)
return e.Value
}
return nil
}
func (s *stack) Reset() {
s.List.Init()
}
type Queue interface {
container
}
func NewQueue() Queue {
return &queue{list.New()}
}
type queue struct {
*list.List
}
func (q *queue) Push(v interface{}) {
q.List.PushBack(v)
}
func (q *queue) Pop() interface{} {
e := q.List.Front()
if e != nil {
q.List.Remove(e)
return e.Value
}
return nil
}
func (q *queue) Len() int {
return q.List.Len()
}
func (q *queue) Reset() {
q.List.Init()
}