Patricia Trie Template Class
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
Ruby Junk Scripts
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Spaghetti Source - 複数パターン検索 (Aho-Corasick)
説明 複数ã®ãƒ‘ターン文å—列ã‹ã‚‰ãªã‚‹é›†åˆã¨é•·ã„æ–‡å—列ãŒä¸Žãˆã‚‰ã‚Œã‚‹ï¼Žé•·ã„æ–‡å—列ã«å¯¾ã—ã¦ãƒžãƒƒãƒã™ã‚‹ãƒ‘ターン文å—列をã™ã¹ã¦æ±‚ã‚るアルゴリズム㌠Aho Corasick ã§ã‚る．ã“ã‚Œã¯è¤‡æ•°ãƒ‘ターン文å—列をã‚らã‹ã˜ã‚ trie ã«å¤‰æ›ã—ã¦ã‹ã‚‰ KMP を実行ã—，パターンマッãƒãƒ³ã‚°ãƒ»ã‚ªãƒ¼ãƒˆãƒžãƒˆãƒ³ã‚’構æˆã—ã¦ã„ã‚‹ã“ã¨ã«ãªã‚‹ï¼Ž 詳ã—ãã¯é©å½“ãªæˆæ›¸ã‚„ http://www.cs.uku.fi/~kilpelai/BSA05/lectures/slides04.pdf ãªã©ã‚’å‚考ã®ã“ã¨ï¼Ž è¨ˆç®—é‡ æ§‹ç¯‰ O(m)． 検索 O(n + m)． ãŸã ã— m ã¯ãƒ‘ターンã®æ–‡å—列長ã®ç·å’Œï¼Œn ã¯æ¤œç´¢ãƒ†ã‚スト長． 使ã„æ–¹ struct PMA; ã‚’é©å®œè¨å®šã®ã“ã¨ï¼Ž buildPMA(char *p[], int m) 0 ... m-1 ã®è¤‡æ•°ã®æ¤œç´¢ãƒ‘ターンã‹ã‚‰ï¼Œãƒ‘ターンマッãƒãƒ³ã‚°ãƒ»ã‚ªãƒ¼ãƒˆãƒžãƒˆãƒ³ã‚’構築ã™ã‚‹ï¼Ž match(c
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