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/suffixAutomaton.cpp | 63 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 content/string/suffixAutomaton.cpp (limited to 'content/string/suffixAutomaton.cpp') diff --git a/content/string/suffixAutomaton.cpp b/content/string/suffixAutomaton.cpp new file mode 100644 index 0000000..9a68cb3 --- /dev/null +++ b/content/string/suffixAutomaton.cpp @@ -0,0 +1,63 @@ +constexpr int ALPHABET_SIZE = 26; +constexpr char OFFSET = 'a'; +struct SuffixAutomaton { + struct State { + int len, link = -1; + array nxt; // map if large Alphabet + State(int l) : len(l) {fill(all(nxt), -1);} + }; + + vector st = {State(0)}; + int cur = 0; + + SuffixAutomaton(const string& s) { + st.reserve(2 * sz(s)); + for (auto c : s) extend(c - OFFSET); + } + + void extend(int c) { + int p = cur; + cur = sz(st); + st.emplace_back(st[p].len + 1); + for (; p != -1 && st[p].nxt[c] < 0; p = st[p].link) { + st[p].nxt[c] = cur; + } + if (p == -1) { + st[cur].link = 0; + } else { + int q = st[p].nxt[c]; + if (st[p].len + 1 == st[q].len) { + st[cur].link = q; + } else { + st.emplace_back(st[p].len + 1); + st.back().link = st[q].link; + st.back().nxt = st[q].nxt; + for (; p != -1 && st[p].nxt[c] == q; p = st[p].link) { + st[p].nxt[c] = sz(st) - 1; + } + st[q].link = st[cur].link = sz(st) - 1; + }}} + + vector calculateTerminals() { + vector terminals; + for (int p = cur; p != -1; p = st[p].link) { + terminals.push_back(p); + } + return terminals; + } + + // Pair with start index (in t) and length of LCS. + pair longestCommonSubstring(const string& t) { + int v = 0, l = 0, best = 0, bestp = -1; + for (int i = 0; i < sz(t); i++) { + int c = t[i] - OFFSET; + while (v > 0 && st[v].nxt[c] < 0) { + v = st[v].link; + l = st[v].len; + } + if (st[v].nxt[c] >= 0) v = st[v].nxt[c], l++; + if (l > best) best = l, bestp = i; + } + return {bestp - best + 1, best}; + } +}; -- cgit v1.2.3