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The Concurrent Data Structures (CDS) library is a collection of concurrent containers that don't require external (manual) synchronization for shared access, and safe memory reclamation (SMR) algorithms like Hazard Pointer and user-space RCU that is used as an epoch-based SMR. CDS is mostly header-only template library. Only SMR core implementation is segregated to .so/.dll file. The library conta
This article introduces a template class-based approach to construct and query Patricia tries. The article includes source code and a demo application. Download source files - 11.8 Kb Download demo project - 13.9 Kb Introduction While working for a company that produced software development tools, I had to write an application that encapsulated an entire file system within a single file. Part of t
Suffix Array (Larsson-Sadakane) 説明 Suffix Arrayとは,与えられた文字列の接尾辞の集合を辞書順ソートしたものである.近年,これを用いることによって多くの文字列の問題が解かれることがわかってきた. Larsson-Sadakane は Suffix Array を O(n (log n)^2) 時間で構成するアルゴリズムである.Mamber-Myers と同様のアイデアによって文字列長を倍加させ,O(log n) 回の multikey quicksort を行うことにより,全体で O(n (log n)^2) の計算量を達成する.詳しくは適当な文献を参照. Suffix Array を用いて解けるもっとも典型的な問題は,文字列の検索である.Suffix Array 上で二分探索を行えば,O(m log n) でパターンの検索ができる.また,Suf
Group description The research group studies a new subfield of data compression - data structure compression. The new aspect compared to traditional compression is that the compressed data (structure) needs to be represented so that access to its internal parts is provided without uncompressing the whole structure. As an example, consider a binary tree of n nodes. It is possible to represent the t
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