diff --git a/src/Problems.rs b/src/Problems.rs
index 3d1ab60..77ccdca 100644
--- a/src/Problems.rs
+++ b/src/Problems.rs
@@ -56,13 +56,14 @@ pub mod Problem30;
pub mod Problem31;
pub mod Problem32;
pub mod Problem33;
+pub mod Problem34;
pub mod Problem67;
-pub static problemNumbers: [u32; 35] = [ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
+pub static problemNumbers: [u32; 36] = [ 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,
- 30, 31, 32, 33, 67];
+ 30, 31, 32, 33, 34, 67];
pub static tooLong: [u32; 7] = [3, 5, 15, 23, 24, 25, 27];
pub fn solveProblem(problemNumber: u32, description: bool, solve: bool) -> Answer::Answer{
@@ -335,6 +336,14 @@ pub fn solveProblem(problemNumber: u32, description: bool, solve: bool) -> Answe
answer = Problem33::solve();
}
}
+ else if(problemNumber == 34){
+ if(description){
+ println!("{}", Problem34::getDescription());
+ }
+ if(solve){
+ answer = Problem34::solve();
+ }
+ }
else if(problemNumber == 67){
if(description){
println!("{}", Problem67::getDescription());
diff --git a/src/Problems/Problem34.rs b/src/Problems/Problem34.rs
new file mode 100644
index 0000000..89c864d
--- /dev/null
+++ b/src/Problems/Problem34.rs
@@ -0,0 +1,68 @@
+//ProjectEulerRust/src/Problems/Problems34.rs
+//Matthew Ellison
+// Created: 06-01-21
+//Modified: 06-01-21
+//Find the sum of all numbers which are equal to the sum of the factorial of their digits
+//Unless otherwise listed all non-standard includes are my own creation and available from https://bibucket.org/Mattrixwv/RustClasses
+/*
+ Copyright (C) 2021 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 .
+*/
+
+
+extern crate myClasses;
+use crate::Problems::Answer::Answer;
+
+pub fn getDescription() -> String{
+ "Find the sum of all numbers which are equal to the sum of the factorial of their digits".to_string()
+}
+
+pub fn solve() -> Answer{
+ let maxNum = 1499999;
+ let mut factorials = Vec::::new();
+ let mut sum = 0;
+
+ //Start the timer
+ let mut timer = myClasses::Stopwatch::Stopwatch::new();
+ timer.start();
+
+ //Pre-compute the possible factorials from 0! to 9!
+ for cnt in 0 ..= 9{
+ factorials.push(myClasses::Algorithms::factorial(cnt));
+ }
+ //Run through all possible number form 3-MAX_NUM and see if they equal the sum of their digit's factorials
+ for cnt in 3 ..= maxNum{
+ //Split the number into its digits and add each one to the sum
+ let numString = cnt.to_string();
+ let mut currentSum = 0;
+ for numChar in numString.chars(){
+ currentSum += factorials[numChar.to_digit(10).unwrap() as usize];
+ }
+ //If the number is equal to the sum add the sum to the running sum
+ if(currentSum == cnt){
+ sum += currentSum;
+ }
+ }
+
+ //Stop the timer
+ timer.stop();
+
+ return Answer::new(format!("The sum of all numbers that are the sum of their digit's factorials is {}", sum), timer.getString(), timer.getNano());
+}
+
+/* Results
+The sum of all numbers that are the sum of their digit's factorials is 40730
+It took an average of 143.433 milliseconds to run this problem through 100 iterations
+*/