34 lines
469 B
Go
34 lines
469 B
Go
package core
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type Stack[T any] struct {
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data []T
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}
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func (s *Stack[T]) Push(item T) {
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s.data = append(s.data, item)
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}
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func (s *Stack[T]) Pop() T {
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l := len(s.data)
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if l == 0 {
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panic("stack is empty")
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}
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item := s.data[l-1]
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var zero T
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s.data[l-1] = zero
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s.data = s.data[:l-1]
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return item
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}
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func (s *Stack[T]) Peek() T {
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l := len(s.data)
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if l == 0 {
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panic("stack is empty")
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}
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return s.data[l-1]
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}
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func (s *Stack[T]) Len() int {
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return len(s.data)
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}
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