Compilare: user.cpp: In function ‘void longestProperPrefix(std::vector<int>&, std::string)’: user.cpp:17:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (i < pat.size()) ^ user.cpp: In function ‘void KMP(std::vector<int>&, std::string, std::string)’: user.cpp:37:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (i < text.size()) ^ user.cpp:40:46: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (text[i] == pat[j] && j == pat.size() - 1) ^