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/suffixArray.cpp | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 content/string/suffixArray.cpp (limited to 'content/string/suffixArray.cpp') diff --git a/content/string/suffixArray.cpp b/content/string/suffixArray.cpp new file mode 100644 index 0000000..8b698d2 --- /dev/null +++ b/content/string/suffixArray.cpp @@ -0,0 +1,38 @@ +constexpr int MAX_CHAR = 256; +struct SuffixArray { + int n; + vector SA, LCP; + vector> P; + + SuffixArray(const string& s) : n(sz(s)), SA(n), LCP(n), + P(__lg(2 * n - 1) + 1, vector(n)) { + P[0].assign(all(s)); + iota(all(SA), 0); + sort(all(SA), [&](int a, int b) {return s[a] < s[b];}); + vector x(n); + for (int k = 1, c = 1; c < n; k++, c *= 2) { + iota(all(x), n - c); + for (int ptr = c; int i : SA) if (i >= c) x[ptr++] = i - c; + + vector cnt(k == 1 ? MAX_CHAR : n); + for (int i : P[k-1]) cnt[i]++; + partial_sum(all(cnt), begin(cnt)); + for (int i : x | views::reverse) SA[--cnt[P[k-1][i]]] = i; + + auto p = [&](int i) {return i < n ? P[k-1][i] : -1;}; + for (int i = 1; i < n; i++) { + int a = SA[i-1], b = SA[i]; + P[k][b] = P[k][a] + (p(a) != p(b) || p(a+c) != p(b+c)); + }} + for (int i = 1; i < n; i++) LCP[i] = lcp(SA[i-1], SA[i]); + } + + int lcp(int x, int y) {//x & y are text-indices, not SA-indices + if (x == y) return n - x; + int res = 0; + for (int i = sz(P) - 1; i >= 0 && max(x, y) + res < n; i--) { + if (P[i][x + res] == P[i][y + res]) res |= 1 << i; + } + return res; + } +}; -- cgit v1.2.3