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34 lines
517 B
Go
34 lines
517 B
Go
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package two
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type stack struct {
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items []interface{}
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}
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func newStack() *stack {
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return &stack{}
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}
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func (s *stack) Push(element interface{}) interface{} {
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s.items = append(s.items, element)
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return element
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}
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func (s *stack) Pop() interface{} {
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l := len(s.items)
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element := s.items[l-1]
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s.items = s.items[:l-1]
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return element
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}
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func (s *stack) Peek() interface{} {
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return s.items[len(s.items)-1]
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}
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func (s *stack) Len() int {
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return len(s.items)
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}
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func (s *stack) IsEmpty() bool {
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return s.Len() == 0
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}
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