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Source/Problem6.cpp

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+//ProjectEuler/C++/Source/Problem6.cpp
+//Matthew Ellison
+// Created: 09-28-18
+//Modified: 07-14-19
+//Find the difference between the sum of the squares of the first one hundred natural numbers and the square of the sum.
+//Unless otherwise listed all non-standard includes are my own creation and available from https://bibucket.org/Mattrixwv/myClasses
+/*
+	Copyright (C) 2019  Matthew Ellison
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Lesser General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public License
+	along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
+
+#include <cinttypes>
+#include <cmath>
+#include <string>
+#include <sstream>
+#include "Stopwatch.hpp"
+#include "../Headers/Problem.hpp"
+#include "../Headers/Problem6.hpp"
+
+
+int Problem6::START_NUM = 1;
+int Problem6::END_NUM = 100;
+
+Problem6::Problem6() : Problem("Find the difference between the sum of the squares of the first one hundred natural numbers and the square of the sum."), sumOfSquares(0), squareOfSum(0){
+
+}
+
+void Problem6::solve(){
+	//If the problem has already been solved do nothing and end the function
+	if(solved){
+		return;
+	}
+	//Start the timer
+	timer.start();
+
+	//Run through all numbers and add them to the appropriate sums
+	for(int currentNum = START_NUM;currentNum <= END_NUM;++currentNum){
+		sumOfSquares += (currentNum * currentNum);	//Add the square to the correct variable
+		squareOfSum += currentNum;	//Add the number to the correct variable for squaring later
+	}
+	//Square the sum that needs it
+	squareOfSum *= squareOfSum;
+
+	//Stop the timer
+	timer.stop();
+
+	//Throw a flag to show the problem is solved
+	solved = true;
+}
+
+std::string Problem6::getString() const{
+	//If the problem hasn't been solved throw an exception
+	if(!solved){
+		throw unsolved();
+	}
+	std::stringstream results;
+	results << "The difference between the sum of the squares and the square of the sum of all numbers from 1-100 is " << abs(sumOfSquares - squareOfSum);
+	return results.str();
+}
+
+uint64_t Problem6::getSumOfSquares() const{
+	//If the problem hasn't been solved throw an exception
+	if(!solved){
+		throw unsolved();
+	}
+	return sumOfSquares;
+}
+
+uint64_t Problem6::getSquareOfSum() const{
+	//If the problem hasn't been solved throw an exception
+	if(!solved){
+		throw unsolved();
+	}
+	return squareOfSum;
+}
+
+uint64_t Problem6::getDifference() const{
+	//If the problem hasn't been solved throw an exception
+	if(!solved){
+		throw unsolved();
+	}
+	return abs(sumOfSquares - squareOfSum);
+}