As as human I always thought that lookup in something sorted is the way faster than loo开发者_如何学JAVAkup in not sorted.
But looking at this http://dotnetperls.com/sorteddictionary I can say that I was wrong.
Maybe anyone can explain why it is so ?
The unsorted dictionary is probably a hash map so lookup is almost O(1) assuming not too many collisions, while a lookup in a sorted list is best case O(log N)
目前还在坐月子期间，但是总是感觉精神抑郁，产后抑郁症的症状有哪些呢？freshwind
喜境牛奶光美肤仪适合出差旅行使用吗？
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是否在对方手机上显示已读，是由用户自行设置的。依次打开iPhone的“设置-信息”，会有一个“发送已读回执”的选项。将其打开，对方就能看到你，是否已经阅读了本条iMessage信息。将其关闭，对方就看不到。
微信重新建群怎么开发者_Go百科建？ 产品名称：苹果手机 产品型号：iPhone 11 系统版本：iOS 13
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