Added a solution to problem 30

src/Problems.rs

@@ -52,3 +52,4 @@ pub mod Problem26;
 pub mod Problem27;
 pub mod Problem28;
 pub mod Problem29;
+pub mod Problem30;

src/Problems/Problem30.rs

@@ -0,0 +1,80 @@
+//ProjectEulerRust/src/Problems/Problems30.rs
+//Matthew Ellison
+// Created: 06-17-20
+//Modified: 06-17-20
+//Find the sum of all the numbers that can be written as the sum of the fifth powers of their digits.
+//Unless otherwise listed all non-standard includes are my own creation and available from https://bibucket.org/Mattrixwv/RustClasses
+/*
+	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 sum of all the numbers that can be written as the sum of the fifth powers of their digits.".to_string()
+}
+
+pub fn solve() -> Answer{
+	let TOP_NUM = 1_000_000;	//This is the largest number that will be checked
+	let BOTTOM_NUM = 2;	//Starts with 2 because 0 and 1 don't count
+	let POWER_RAISED = 5;	//This is the power that the digits are raised to
+	let mut sumOfFifthNumbers = Vec::<i64>::new();	//Sum of the power of the fifth powers of their digits
+
+	//Start the timer
+	let mut timer = myClasses::Stopwatch::Stopwatch::new();
+	timer.start();
+
+	//Start with the lowest number and increment until you reach the largest number
+	for currentNum in BOTTOM_NUM..=TOP_NUM{
+		//Get the digits of the number
+		let digits = getDigits(currentNum);
+		//Get the sum of the powers
+		let mut sumOfPowers = 0;
+		for num in digits{
+			sumOfPowers += num.pow(POWER_RAISED);
+		}
+		//Check if the sum of the powers is the same as the number
+		//If it is add it to the list, otherwise continue to the next number
+		if(sumOfPowers == currentNum){
+			sumOfFifthNumbers.push(currentNum);
+		}
+	}
+
+	//Stop the timer
+	timer.stop();
+
+	//Return the results
+	return Answer::new(format!("The sum of all the numbers that can be written as the sum of the fifth powers of their digits is {}", sumOfFifthNumbers.iter().sum::<i64>()), timer.getString());
+}
+//Returns a vector with the individual digits of the number passed to it
+fn getDigits(num: i64) -> Vec::<i64>{
+	let mut listOfDigits = Vec::<i64>::new();	//This ArrayList holds the individual digits of num
+	//The easiest way to get the individual digits of a number is by converting it to a string
+	let digits = num.to_string();
+	//Start with the first digit, convert it to an integer, store it in the ArrayList, and move to the next digit
+	for character in digits.chars(){
+		listOfDigits.push(character.to_digit(10).unwrap() as i64);
+	}
+	//Return the list of digits
+	return listOfDigits;
+}
+
+/* Results:
+The sum of all the numbers that can be written as the sum of the fifth powers of their digits is 443839
+It took 320.693 milliseconds to solve this problem
+*/

src/main.rs

@@ -33,9 +33,10 @@ mod Problems;
 #[derive(PartialEq)]
 enum Selections{EMPTY, SOLVE, DESCRIPTION, LIST, EXIT, SIZE}
 
-static problemNumbers: [u32; 30] = [ 0,  1,  2,  3,  4,  5,  6,  7,  8,  9,
+static problemNumbers: [u32; 31] = [ 0,  1,  2,  3,  4,  5,  6,  7,  8,  9,
 									10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
-									20, 21, 22, 23, 24, 25, 26, 27, 28, 29];
+									20, 21, 22, 23, 24, 25, 26, 27, 28, 29,
+									30];
 
 fn main(){
 	let mut selection = Selections::EMPTY;
@@ -248,6 +249,10 @@ fn solveProblem(problemNumber: u32){
 		println!("{}", Problems::Problem29::getDescription());
 		println!("{}", Problems::Problem29::solve());
 	}
+	else if(problemNumber == 30){
+		println!("{}", Problems::Problem30::getDescription());
+		println!("{}", Problems::Problem30::solve());
+	}
 }
 fn descriptionMenu(){
 	//Give some extra space to print the description
@@ -360,6 +365,9 @@ fn printDescription(problemNumber: u32){
 	else if(problemNumber == 29){
 		println!("{}", Problems::Problem29::getDescription());
 	}
+	else if(problemNumber == 30){
+		println!("{}", Problems::Problem30::getDescription());
+	}
 }
 fn getProblemNumber() -> u32{
 	println!("Enter a problem number: ");