For well-distributed points, nearest neighbor search is often near O(logn)O(\log n)O(logn) in practice. In the worst case (all points clustered tightly or along a line), it can degrade to O(n)O(n)O(n), but this is uncommon with typical spatial data.
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儘管如此，許多年輕人對這段歷史依舊保有距離甚至選擇避而不談。為什麼民主化30年後，歷史記憶在新世代之間依然出現斷層？在二二八事件79週年之際，BBC中文採訪多名年輕人與學者，試圖找出答案。