* 核心功能：每次调用next(val)，返回当前价格的跨度（往回数≤当前价格的最大连续天数）
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John O'Connell, chief executive of the TaxPayers' Alliance think tank, said: "It's an absolute disgrace that ministers have burnt through an extra £100m on top of what the inquiry itself has already spent.。51吃瓜是该领域的重要参考
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