//用陣列實現棧
class
stack
//棧頂: 陣列的最後一條陣列
var peek: anyobject?
//初始化棧, 也就是初始化陣列
init()
//入棧操作: 向陣列中追加資料
func push(object
: anyobject)
//出棧操作: 從陣列中移除最後一條資料
func pop() -> anyobject?
else
}}//
建立棧var mystack =stack()
//入棧
mystack.push(object: string(2) as
anyobject)
mystack.push(
object: string(5) as
anyobject)
//出棧
var result =mystack.pop()
print(result!)
//列印棧中的資料
print(mystack.stack)
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