使用Go语言实现堆栈(Stack)

     今天用Go实现了一个Stack, 提供了如下方法:     

//放入元素
func (stack *Stack)Push(value ...interface{})

//返回下一个元素
func (stack *Stack)Top()(value interface{})

//返回下一个元素,并从Stack移除元素
func (stack *Stack)Pop()(err error)

//交换Stack
func (stack *Stack)Swap(other *Stack)

//修改指定索引的元素
func (stack *Stack)Set(idx int,value interface{})(err error)

//返回指定索引的元素
func (stack *Stack)Get(idx int)(value interface{})

//是否为空
func (stack *Stack)Empty()(bool)

//打印
func (stack *Stack)Print()

  测试代码:

package main


//Stack
//author:Xiong Chuan Liang
//date:2015-1-30

import (
	"fmt"
	"github.com/xcltapestry/xclpkg/algorithm"  
)

func main(){

	stack := algorithm.NewStack()
	if stack.Empty() {
		fmt.Println("Stack为空! ")
	}else{
		fmt.Println("Stack不为空! ",stack.Size())
	}

	stack.Push(10)
	stack.Push(20)
	stack.Push(30)
	stack.Push(40)
	fmt.Println("当前Size() = ",stack.Size())
	stack.Print()

	fmt.Println("当前Top() = ",stack.Top())

	stack.Pop()
	fmt.Println("执行完Pop()后的Top() = ",stack.Top())
	stack.Print()

	
	stack.Set(2,900)
	fmt.Println("\n执行完Set(2,900)后的Stack")
 	stack.Print()

	fmt.Println("\nGet()查看指定的元素: ")
	fmt.Println("当前idx为1的元素 = ",stack.Get(1))
	fmt.Println("当前idx为2的元素 = ",stack.Get(2))

	stack2 := algorithm.NewStack()
	stack2.Push("111")
	stack2.Push("222")
	fmt.Println("\nstack2的初始内容:")
	stack2.Print()

	stack.Swap(stack2)	
	fmt.Println("Swap()后stack的内容:")
	stack.Print()
	fmt.Println("Swap()后stack2的内容:")
	stack2.Print()


	fmt.Println("\nstack增加字符串元素: ")
	stack.Push("中文元素")
	stack.Push("elem1")	
	stack.Print()
	
}

 运行效果:

Stack为空!
当前Size() =  4
3 => 40
2 => 30
1 => 20
0 => 10
当前Top() =  40
执行完Pop()后的Top() =  30
2 => 30
1 => 20
0 => 10

执行完Set(2,900)后的Stack
2 => 900
1 => 20
0 => 10

Get()查看指定的元素:
当前idx为1的元素 =  20
当前idx为2的元素 =  900

stack2的初始内容:
1 => 222
0 => 111
Swap()后stack的内容:
1 => 222
0 => 111
Swap()后stack2的内容:
2 => 900
1 => 20
0 => 10

stack增加字符串元素:
3 => elem1
2 => 中文元素
1 => 222
0 => 111

C++ STL的stack相关可查: http://www.cplusplus.com/reference/stack/stack/stack/

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