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由 Viktar Basharymau 提交于
Because it is used as a queue (FIFO), not as a stack (LIFO). * http://en.wikipedia.org/wiki/Stack_(abstract_data_type) * http://en.wikipedia.org/wiki/Queue_(data_structure)
2dafd87e
Because it is used as a queue (FIFO), not as a stack (LIFO). * http://en.wikipedia.org/wiki/Stack_(abstract_data_type) * http://en.wikipedia.org/wiki/Queue_(data_structure)