/* [ Usage Example (Code Playground) ] Enter the text samples to process, with each separated by the driver code uses loop to accept multiple inputs. [ Assignment Description ] Create a function that returns an array containing rotated versions of its string argument. @Ipang © 2018 SoloLearn Community */ #include #include #include const std::string dq {"\""}; /* Function rotateString Description: Rotates a string [string length] number of times. Parameters: string string to rotate Return value: vector containing rotated versions of the string (wrapped in quotes). */ std::vector rotateString(const std::string& buffer) { // Return an empty vector when // input is empty if(buffer.empty()) return std::vector(); std::string::size_type l {buffer.size()}, s {0}; std::vector rv; // Rotate the string while(s++ < l) rv.push_back(dq + buffer.substr(s, l - s) + buffer.substr(0, s) + dq); return rv; } /* Function print Description: Helper function for printing contents of a vector Parameters: string Original string vector vector to be printed Return value: None, void */ void print( const std::string& text, const std::vector& items) { std::cout << "Text: " << dq << text << dq << "\n["; if(text.empty()) { // Outputs "[Empty]" std::cout << "Empty]\n\n"; return; } std::vector::size_type s {0}, c {items.size()}; for(; s < c; ++s) { std::cout << items.at(s); (s < c - 1) ? std::cout << " , " : std::cout << "]\n\n"; } } // Main procedure int main() { std::string buffer; std::vector rotations; // Read on while input is valid while(true) { std::getline(std::cin, buffer); if(!std::cin.good()) break; rotations = rotateString(buffer); print(buffer, rotations); } }

Challenge - Rotate String