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Efficient Running Median using an Indexable Skiplist (Python recipe) by Raymond Hettinger Maintains sorted data as new elements are added and old one removed as a sliding window advances over a stream of data. Also gives fast indexed access to value. Running time per median update is proportional to the log of the window size. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27
In computer science, a skip list (or skiplist) is a probabilistic data structure that allows average complexity for search as well as average complexity for insertion within an ordered sequence of elements. Thus it can get the best features of a sorted array (for searching) while maintaining a linked list-like structure that allows insertion, which is not possible with a static array. Fast search
Overview Multiverse is a Java based Software Transactional Memory (STM) implementation that wants to realize the following goals: Seamless integration in the Java language: done through annotations and bytecode instrumentation. For more information check the 60 Second guide to Multiverse or check the documentation overview for a complete listing of guides/manuals and literature. Language independe
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