(C++) std::lexicographical_compare

 

std::lexicographical_compare is an STL algorithm to determine if two sequences of characters are in an alphabetically sorted order. Note that std::strings are compared this way by default.

 

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#include <algorithm> #include <cassert> #include <string> int main() {   const std::string s1 = "Bilderbikkel";   const std::string s2 = "Parachutemeisje";   //Assume Bilderbikkel comes before Parachutemeisje   //with std::lexicographical_compare   assert(std::lexicographical_compare(     s1.begin(),s1.end(),s2.begin(),s2.end()) == true);   //Assume Bilderbikkel comes before Parachutemeisje   //with default std::string behavior   assert(s1 < s2); }