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In a team queue each element belongs to a team. If an element enters the queue, it first searches the queue from head to tail to check if some of itst... 阅读全文
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The computer op erates on a single stack of sets, which is initially empty. After each op eration, thecardinality of the topmost set on the stack is o... 阅读全文
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Most crossword puzzle fans are used toanagrams--groups of words with the same letters in different orders--for example OPTS, SPOT, STOP, POTS and POST... 阅读全文
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DescriptionIn Korea, the naughtiness of the cheonggaeguri, a small frog, is legendary. This is a well-deserved reputation, because the frogs jump thro... 阅读全文