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:45:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (j == pat.size()) ^ user.cpp:51:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] else if (i < text.size() && pat[j] != text[i]) { ^