27 lines
436 B
Swift
27 lines
436 B
Swift
struct Stack<T> {
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var items = [T]()
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var empty:Bool {
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return items.count == 0
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}
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func peek() -> T {
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return items[items.count - 1]
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}
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mutating func pop() -> T {
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return items.removeLast()
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}
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mutating func push(obj:T) {
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items.append(obj)
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}
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}
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var stack = Stack<Int>()
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stack.push(1)
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stack.push(2)
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println(stack.pop())
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println(stack.peek())
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stack.pop()
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println(stack.empty)
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