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Added solution to problem 5
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@@ -10,3 +10,4 @@ pub mod Problem1;
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pub mod Problem2;
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pub mod Problem3;
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pub mod Problem4;
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pub mod Problem5;
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63
src/Problems/Problem5.rs
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63
src/Problems/Problem5.rs
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@@ -0,0 +1,63 @@
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//ProjectEulerRust/src/Problems/Problems5.rs
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//Matthew Ellison
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// Created: 06-15-20
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//Modified: 06-15-20
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//What is the smallest positive number that is evenly divisible by all of the numbers from 1 to 20?
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//Unless otherwise listed all non-standard includes are my own creation and available from https://bibucket.org/Mattrixwv/JavaClasses
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/*
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Copyright (C) 2019 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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extern crate myClasses;
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use crate::Problems::Answer::Answer;
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pub fn getDescription() -> String{
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"What is the smallest positive number that is evenly divisible by all of the numbers from 1 to 20?".to_string()
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}
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pub fn solve() -> Answer{
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//Start the timer
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let mut timer = myClasses::Stopwatch::Stopwatch::new();
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timer.start();
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//Start at 20 because it must at least be divisible by 20. Increment by 2 because it must be an even number to be divisible by 2
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let mut numFound = false;
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let mut currentNum = 20;
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//If the number is < 0 it has overflowed
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while((currentNum > 0) && (!numFound)){
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//Start by assuming you found the number (because we throw a flad if we didn't find it)
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numFound = true;
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//Step through every number from 1-20 seeing if the current number is divisible by it
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for divisor in 1..=20{
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if((currentNum % divisor) != 0){
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numFound = false;
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break;
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}
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}
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//If you didn't find the correct number then increment by 2
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if(!numFound){
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currentNum += 2;
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}
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}
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//Stop the timer
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timer.stop();
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//Save the results
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return Answer::new(format!("The smallest positive number evenly divisibly by all number 1-20 is {}", currentNum), timer.getString());
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}
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@@ -16,7 +16,7 @@ mod Problems;
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#[derive(PartialEq)]
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enum Selections{EMPTY, SOLVE, DESCRIPTION, LIST, EXIT, SIZE}
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static problemNumbers: [u32; 5] = [0, 1, 2, 3, 4];
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static problemNumbers: [u32; 6] = [0, 1, 2, 3, 4, 5];
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fn main(){
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let mut selection = Selections::EMPTY;
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@@ -129,6 +129,10 @@ fn solveProblem(problemNumber: u32){
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println!("{}", Problems::Problem4::getDescription());
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println!("{}", Problems::Problem4::solve());
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}
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else if(problemNumber == 5){
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println!("{}", Problems::Problem5::getDescription());
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println!("{}", Problems::Problem5::solve());
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}
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}
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fn descriptionMenu(){
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//Give some extra space to print the description
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@@ -166,6 +170,9 @@ fn printDescription(problemNumber: u32){
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else if(problemNumber == 4){
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println!("{}", Problems::Problem4::getDescription());
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}
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else if(problemNumber == 5){
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println!("{}", Problems::Problem5::getDescription());
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}
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}
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fn getProblemNumber() -> u32{
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println!("Enter a problem number: ");
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