From 5ab8a5088b729a9953b8dff1b2a985dc8fb2098b Mon Sep 17 00:00:00 2001 From: mzuenni Date: Mon, 27 Jun 2022 17:19:28 +0200 Subject: updated tcr --- string/kmp.cpp | 44 +++++++++++++++++++++----------------------- 1 file changed, 21 insertions(+), 23 deletions(-) (limited to 'string/kmp.cpp') diff --git a/string/kmp.cpp b/string/kmp.cpp index 450b368..282019e 100644 --- a/string/kmp.cpp +++ b/string/kmp.cpp @@ -1,25 +1,23 @@ -// Laufzeit: O(n + m), n = #Text, m = #Pattern -vector kmpPreprocessing(string &sub) { - vector b(sub.length() + 1); - b[0] = -1; - int i = 0, j = -1; - while (i < (int)sub.length()) { - while (j >= 0 && sub[i] != sub[j]) j = b[j]; - i++; j++; - b[i] = j; - } - return b; +vector kmpPreprocessing(const string& sub) { + vector b(sub.size() + 1); + b[0] = -1; + int i = 0, j = -1; + while (i < (int)sub.size()) { + while (j >= 0 && sub[i] != sub[j]) j = b[j]; + i++; j++; + b[i] = j; + } + return b; } - -vector kmpSearch(string &s, string &sub) { - vector pre = kmpPreprocessing(sub), result; - int i = 0, j = 0; - while (i < (int)s.length()) { - while (j >= 0 && s[i] != sub[j]) j = pre[j]; - i++; j++; - if (j == (int)sub.length()) { - result.push_back(i - j); - j = pre[j]; - }} - return result; +vector kmpSearch(const string& s, const string& sub) { + vector pre = kmpPreprocessing(sub), result; + int i = 0, j = 0; + while (i < (int)s.size()) { + while (j >= 0 && s[i] != sub[j]) j = pre[j]; + i++; j++; + if (j == (int)sub.size()) { + result.push_back(i - j); + j = pre[j]; + }} + return result; } -- cgit v1.2.3