Compilare: user.cpp: In function ‘void buildLps()’: user.cpp:18:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (i < pattern.size()) ^ user.cpp: In function ‘void KMPsearch()’: user.cpp:41:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (i < text.size()) { ^ user.cpp:46:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (j == pattern.size()) { ^ user.cpp:52:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] else if (i < text.size() && text[i] != pattern[j]) { ^ user.cpp: In function ‘int main()’: user.cpp:75:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < positions.size(); i++) { ^