golang实现栈,队列

雨点打透心脏的1/2处 2022-01-23 04:41 419阅读 0赞

### 栈(LIFO) ###

package main
    
    import (
    	"fmt"
    	"sync"
    )
    
    /*
     使用 golang 实现栈
     栈是一种LIFO(Last In First Out) 的数据结构,可以封装一个slice实现
     */
    
    type Stack struct {
    	s []int
    	Mutex sync.Mutex
    }
    
    func (self *Stack) Push(value int)  {
    	self.Mutex.Lock()
    	defer self.Mutex.Unlock()
    	self.s = append(self.s, value)
    }
    // 先取出最后一个元素,再缩减slice
    func (self *Stack) Pop() int  {
    	self.Mutex.Lock()
    	defer self.Mutex.Unlock()
    	value := self.s[len(self.s) - 1]
    	self.s = self.s[:len(self.s) - 1]
    	return value
    }
    
    func (self *Stack) IsEmpty() bool  {
    	self.Mutex.Lock()
    	defer self.Mutex.Unlock()
    	return len(self.s) == 0
    }
    
    func (self *Stack) Size() int  {
    	self.Mutex.Lock()
    	defer self.Mutex.Unlock()
    	return len(self.s)
    }
    
    func main()  {
    	stack := &Stack{}
    	stack.Push(0)
    	stack.Push(1)
    	stack.Push(2)
    	stack.Push(3)
    	stack.Push(4)
    	stack.Push(5)
    	fmt.Println(stack.IsEmpty())
    	fmt.Println(stack.Size())
    }

### 队列(FIFO) ###

package main
    
    import (
    	"sync"
    	"fmt"
    )
    
    /*
     golang 实现 队列
     队列是一种FIFO(First In First Out) 的数据结构 可以使用slice 实现
     */
    
    type Queue struct {
    	queue []int
    	Mutex sync.Mutex
    }
    
    func (self *Queue) Push(value int)  {
    	self.Mutex.Lock()
    	defer self.Mutex.Unlock()
    	self.queue = append(self.queue, value)
    }
    // 取出slice第一个元素,再调整 slice
    func (self *Queue) Pop() int  {
    	self.Mutex.Lock()
    	defer self.Mutex.Unlock()
    	value := self.queue[0]
    	self.queue = self.queue[1:]
    	return value
    }
    
    func (self *Queue) IsEmpty() bool  {
    	self.Mutex.Lock()
    	defer self.Mutex.Unlock()
    	return len(self.queue) == 0
    }
    
    func (self *Queue) Size() int {
    	self.Mutex.Lock()
    	defer self.Mutex.Unlock()
    
    	return len(self.queue)
    }
    
    func main()  {
    	q := &Queue{}
    	q.Push(0)
    	q.Push(1)
    	q.Push(2)
    
    	fmt.Println(q.Pop())
    	fmt.Println(q.Pop())
    	fmt.Println(q.Pop())
    
    	fmt.Println(q.IsEmpty())
    	fmt.Println(q.Size())
    }