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// 计算天数：栈非空→栈顶索引-当前索引；栈空→0（易错点3：索引差别写反）
，这一点在旺商聊官方下载中也有详细论述
a domain and lists websites or articles similar to what you entered. Market。heLLoword翻译官方下载对此有专业解读
but something like:
Range queries ask "what's inside this box?" But sometimes the question is "what's nearest to this location?" This is the nearest neighbor problem, and you don't know how big your search radius should be. The nearest point might be right next to you or far away.