38 lines
615 B
Groovy
38 lines
615 B
Groovy
def stack = []
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assert stack.empty
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stack.push(55)
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stack.push(21)
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stack.push('kittens')
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assert stack.last() == 'kittens'
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assert stack.size() == 3
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assert ! stack.empty
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println stack
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assert stack.pop() == "kittens"
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assert stack.size() == 2
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println stack
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stack.push(-20)
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println stack
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stack.push( stack.pop() * stack.pop() )
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assert stack.last() == -420
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assert stack.size() == 2
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println stack
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stack.push(stack.pop() / stack.pop())
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assert stack.size() == 1
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println stack
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println stack.pop()
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assert stack.size() == 0
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assert stack.empty
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try { stack.pop() } catch (NoSuchElementException e) { println e.message }
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