Areas across the UK from Cornwall to County Down have seen their wettest January on record continue with heavy rain in February.
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，更多细节参见同城约会
描述：给定链表 head，对于每个节点，查找其右侧第一个值严格大于它的节点。返回整数数组 answer，answer[i] 为第 i 个节点的下一个更大节点值；若无，则为 0。
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