From 8d11c6c8213f46f0fa19826917c255edd5d43cb1 Mon Sep 17 00:00:00 2001 From: mzuenni Date: Sun, 28 Jul 2024 22:54:40 +0200 Subject: Test (#4) * update * moved content in subdir * rename file * add test setup * add test setup * add github action * automaticly test all cpp files * timeout after 10s * setulimit and dont zero memory * test build pdf * install latexmk * update * update * ngerman * fonts * removed old code * add first test * added tests * test in sorted order * more tests * simplified test * more tests * fix suffix tree * fixes and improvements * done ust lst directly * fix swap * add links to pdf * fix constants * add primorial * add comment * various improvements * more tests * added missing stuf * more tests * fix tests * more tests * more tests * more tests * fix recursion? * test trie * more tests * only use python temporarily for listings * only use python temporarily for listings * more tests * fix longestCommonSubstring * more tests * more tests * made code more similiar * fix? * more tests * more tests * more tests * add ahoCorasick test + limit 4GB stack size * more tests * fix test * add additional test * more tests * more tests * fix? * better fix * fix virtual tree * more tests * more tests * recursive closest pair * more tests * decrease limit * new tests * more tests * fix name * more tests * add test * new test * more tests * more tests * more tests * more tests * new test and content * new code * new code * larger tests * fix and test * new test * new test * update pdf * remove comments * new test * more tests * more testcases * more tests * increased limit * more tests * more tests * more tests * new tests * more tests * shortened code * new test * add basic tests for bigint * more tests * removed old files * new test * ignore some files * more auto more ccw * fix test * more tests * fix * new tests * more tests * more tests * stronger test * actually verify delaunay... * more tests * fix header * more tests * run tests parallel? * test parralel? * add --missing * separate workflows * test * is the pdf checked? * separate workflows * fix workflow * more workflows --------- Co-authored-by: Yidi --- content/string/ahoCorasick.cpp | 52 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 content/string/ahoCorasick.cpp (limited to 'content/string/ahoCorasick.cpp') diff --git a/content/string/ahoCorasick.cpp b/content/string/ahoCorasick.cpp new file mode 100644 index 0000000..eac312c --- /dev/null +++ b/content/string/ahoCorasick.cpp @@ -0,0 +1,52 @@ +constexpr ll ALPHABET_SIZE = 26, OFFSET = 'a'; +struct AhoCorasick { + struct vert { + int suffix = 0, ch, cnt = 0; + array nxt = {}; + + vert(int p, int c) : suffix(-p), ch(c) {} + }; + vector aho = {{0, -1}}; + + int addString(string &s) { + int v = 0; + for (auto c : s) { + int idx = c - OFFSET; + if (!aho[v].nxt[idx]) { + aho[v].nxt[idx] = sz(aho); + aho.emplace_back(v, idx); + } + v = aho[v].nxt[idx]; + } + aho[v].cnt++; + return v; // trie node index of pattern (pattern state) + } + + int getSuffix(int v) { + if (aho[v].suffix < 0) { + aho[v].suffix = go(getSuffix(-aho[v].suffix), aho[v].ch); + } + return aho[v].suffix; + } + + int go(int v, int idx) { // Root is v=0, idx is char - OFFSET + if (aho[v].nxt[idx]) return aho[v].nxt[idx]; + else return v == 0 ? 0 : go(getSuffix(v), idx); + } + + vector> adj; + vector dp; + void buildGraph() { + adj.resize(sz(aho)); + dp.assign(sz(aho), 0); + for (int i = 1; i < sz(aho); i++) { + adj[getSuffix(i)].push_back(i); + }} + + void dfs(int v = 0) { // dp on tree + for (int u : adj[v]) { + //dp[u] = dp[v] + aho[u].cnt; // pattern count + dfs(u); + dp[v] += dp[u]; // no of matches + }} +}; -- cgit v1.2.3