/* Author : ~swim~ Date : 5-May-2018 Description: [ASSIGNMENT] The LED Problem In one LED Bulb there are 3 LED lights:Red, Green and Blue. See the colour combinations: https://ibb.co/bJCpGx Red LED stays ON for R seconds Green LED stays ON for G seconds Blue LED stays ON for B seconds Similarly they stay OFF for same R, G, B seconds. Initially,the LEDs are OFF. Challenge: Given the total number of seconds T, find the number of seconds Red, Green, Blue, Yellow,Cyan,Magenta,White,Black(No Light) stays ON. SampleInput: 12 2 3 5 SampleOutput: 1 1 1 3 2 2 0 2 Ill: https://ibb.co/dkWkOc Input : Enter 4 number separated by space or line and where each number represent the following 1. Total time elapsed 2. No of sec for which red led goes on and off 3. No of sec for which green led goes on and off 4. No of sec for which blue led goes on and off Note: Comprehensive input checking is not done. */ #include #include #include #include #include using namespace std; namespace LED { using Color_time_map = unordered_multimap>; Color_time_map ctmap { {"100",{"Red", 0}}, {"010",{"Green", 0}}, {"001",{"Blue" , 0}}, {"110",{"Yellow", 0}}, {"011",{"Cyan", 0}}, {"111",{"White" , 0}}, {"101",{"Magenta", 0}}, {"000",{"Black", 0}} }; } // end namespace::LED // generate the pattern for each // color auto init_colors_pat( auto cval, auto Tt) { stringstream ss; for(int nloops((Tt/cval)+1),idx{0}; idx < nloops; idx+=2) { ss << string(cval,'0') << string(cval,'1'); } return ss.str().substr(0,Tt); }// end init_colors_pat auto main()->int { int const nLED {3}; int Tt{}, R{}, G{}, B{}; cin >> Tt >> R >> G >> B; if(Tt<=0) { cout << "error, invalid value for time." "enter value > than 0\n"; return -1; } if(R<0 || G<0 || B<0) { cout << "error, R,G,B values cannot be less than 0\n"; return -1; } // init color red's pattern string RED {init_colors_pat( R,Tt)}; // init color green's pattern string GREEN {init_colors_pat( G,Tt)}; // init color blues's pattern string BLUE {init_colors_pat( B,Tt)}; // calculate LED glow time using LED::ctmap; for(int i{0}; isecond.second; } // display the total no of seconds // for which each LED glowed for(auto&& e : ctmap) cout << setw(8) << e.second.first << ":" << setw(3) << e.second.second << "\n"; cout << "\n"; cout << "R = " << RED << "\n"; cout << "G = " << GREEN << "\n"; cout << "B = " << BLUE << "\n"; } // end main

[Assignment] LED Problem.cpp