/* https://www.sololearn.com/Discuss/903788/?ref=app [CHALLENGE]🏆 Print the following series 📑 Description: Print numbers in alternating order. You should take a number as input : >> 5 And your output should be : >> [0,5,1,4,2,3] Let's take another input as : >> 10 And, your output should be: >> [0,10,1,9,2,8,3,7,4,6,5,5] ✨ Hint: Every two consecutive numbers add up to give the input 🔖 Note: Your output list should have even number of terms Best of luck 👍 # Happy coding */ #include /* Function printSeq Description: Prints a sequence of paired numbers to make up the input . The sequence consists of the first half list of numbers enumerated from zero to . - Added negative input support. @Ipang © 2017 SoloLearn Community */ const std::string DELIMITER = " , "; void printSeq(short n) { if(!n) return; short i, limit; bool expr, neg {n < 0}; if(neg) { i = 0; limit = n / 2 - 1; } else { i = 0; limit = n / 2 + 1; } std::cout << "\nCurrent number: " << n << "\n["; do { std::cout << i << "," << (n - i); if(neg) { if(i > limit + 1) std::cout << DELIMITER; i--; expr = (i > limit); } else { if(i < limit - 1) std::cout << DELIMITER; i++; expr = (i < limit); } } while (expr); std::cout << "]" << std::endl; } int main() { short num {0}; std::cout << "Enter the number: "; std::cin >> num; if(!num || !std::cin.good()) { std::cout << "\n\nInvalid number. Number cannot be zero!" << std::endl; return 0; } std::cout << num; short start = (num < 0) ? -1 : 1; std::cout << "\nTrying to workout with number from " << start << " to " << num << "\n"; if(num < 0) { for(short i = start; i >= num; i--) printSeq(i); } else { for(short i = start; i <= num; i++) printSeq(i); } return 0; }

Challenge - Print series of number