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80 lines
2.2 KiB
C++
80 lines
2.2 KiB
C++
//ProjectEuler/ProjectEulerCPP/headers/Problem.hpp
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//Matthew Ellison
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// Created: 07-04-19
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//Modified: 08-28-20
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//This is an abstract base class to allow polymorphism for the individual problems
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/*
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Copyright (C) 2020 Matthew Ellison
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#ifndef PROBLEM_HPP
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#define PROBLEM_HPP
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#include <sstream>
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#include <string>
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#include "Stopwatch.hpp"
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class Problem{
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protected:
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const std::string description; //Holds the description of the problem
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mee::Stopwatch timer; //Used to determine your algorithm's run time
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bool solved; //Holds true after the problem has been solved
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class Unsolved{}; //An exception class thrown if you try to access something before it has been solved
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public:
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//Constructors
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Problem() : solved(false){
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}
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Problem(std::string description) : description(description), solved(false){
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}
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//Destructor
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virtual ~Problem(){
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}
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//Gets
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virtual std::string getDescription() const{
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return description;
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}
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//Get the time it took to run the algorithm as a string
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virtual std::string getTime(){
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//If the problem hasn't been solved throw an exception
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if(!solved){
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throw Unsolved();
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}
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return timer.getStr();
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}
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//Get a copy of the timer that was used to time the algorithm
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virtual mee::Stopwatch getTimer(){
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//If the problem hasn't been solved throw an exception
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if(!solved){
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throw Unsolved();
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}
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return timer;
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}
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//Reset the problem so it can be run again
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virtual void reset(){
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timer.reset();
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solved = false;
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}
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//Pure virtual functions
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//Solve the problem
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virtual void solve() = 0;
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//Return a string with the solution to the problem
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virtual std::string getResult() = 0;
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};
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#endif //PROBLEM_HPP
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