From f46932594b745cf0e5b926625d6dc9c805588a02 Mon Sep 17 00:00:00 2001
From: Mattrixwv <m_ellison@ymail.com>
Date: Mon, 15 Jun 2020 12:32:27 -0400
Subject: [PATCH] Added solution to problem 6

---
 src/Problems.rs          |  3 +-
 src/Problems/Problem6.rs | 59 ++++++++++++++++++++++++++++++++++++++++
 src/main.rs              |  9 +++++-
 3 files changed, 69 insertions(+), 2 deletions(-)
 create mode 100644 src/Problems/Problem6.rs

diff --git a/src/Problems.rs b/src/Problems.rs
index 8fb87a3..9f02bd9 100644
--- a/src/Problems.rs
+++ b/src/Problems.rs
@@ -1,7 +1,7 @@
 //ProjectEulerRust/src/Problems.rs
 //Matthew Ellison
 // Created: 06-11-20
-//Modified: 06-13-20
+//Modified: 06-15-20
 //This file just forwards all the problem modules
 
 
@@ -11,3 +11,4 @@ pub mod Problem2;
 pub mod Problem3;
 pub mod Problem4;
 pub mod Problem5;
+pub mod Problem6;
diff --git a/src/Problems/Problem6.rs b/src/Problems/Problem6.rs
new file mode 100644
index 0000000..e4dfaf5
--- /dev/null
+++ b/src/Problems/Problem6.rs
@@ -0,0 +1,59 @@
+//ProjectEulerRust/src/Problems/Problems6.rs
+//Matthew Ellison
+// Created: 06-15-20
+//Modified: 06-15-20
+//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/JavaClasses
+/*
+	Copyright (C) 2020  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/>.
+*/
+
+
+extern crate myClasses;
+use crate::Problems::Answer::Answer;
+
+
+pub fn getDescription() -> String{
+	"Find the difference between the sum of the squares of the first one hundred natural numbers and the square of the sum.".to_string()
+}
+
+pub fn solve() -> Answer{
+	let START_NUM = 1;
+	let END_NUM = 100;
+	//Start the timer
+	let mut timer = myClasses::Stopwatch::Stopwatch::new();
+	timer.start();
+
+	//Setup the variables
+	let mut sumOfSquares = 0i64;	//Holds the sum of the squares of all the numbers
+	let mut squareOfSum = 0i64;		//Holds the square of the sum of all the numbers
+
+	//Run through all number and add them to the appropriate sums
+	for currentNum in START_NUM..END_NUM{
+		//Add the square to the correct variable
+		sumOfSquares += (currentNum * currentNum);
+		//Add the number to the correct variable to squaring later
+		squareOfSum += currentNum;
+	}
+	//Squaring the sum that needs it
+	squareOfSum *= squareOfSum;
+
+	//Stop the timer
+	timer.stop();
+
+	//Save the results
+	return Answer::new(format!("The difference between the sum of the squares and the square of the sum of all numbers from 1-100 is {}\n", (sumOfSquares - squareOfSum).abs()), timer.getString());
+}
diff --git a/src/main.rs b/src/main.rs
index f8b9d29..cc9cd82 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -16,7 +16,7 @@ mod Problems;
 #[derive(PartialEq)]
 enum Selections{EMPTY, SOLVE, DESCRIPTION, LIST, EXIT, SIZE}
 
-static problemNumbers: [u32; 6] = [0, 1, 2, 3, 4, 5];
+static problemNumbers: [u32; 7] = [0, 1, 2, 3, 4, 5, 6];
 
 fn main(){
 	let mut selection = Selections::EMPTY;
@@ -133,6 +133,10 @@ fn solveProblem(problemNumber: u32){
 		println!("{}", Problems::Problem5::getDescription());
 		println!("{}", Problems::Problem5::solve());
 	}
+	else if(problemNumber == 6){
+		println!("{}", Problems::Problem6::getDescription());
+		println!("{}", Problems::Problem6::solve());
+	}
 }
 fn descriptionMenu(){
 	//Give some extra space to print the description
@@ -173,6 +177,9 @@ fn printDescription(problemNumber: u32){
 	else if(problemNumber == 5){
 		println!("{}", Problems::Problem5::getDescription());
 	}
+	else if(problemNumber == 6){
+		println!("{}", Problems::Problem6::getDescription());
+	}
 }
 fn getProblemNumber() -> u32{
 	println!("Enter a problem number: ");