solve p0006 in rust

README.rst

@@ -41,7 +41,7 @@ LivInTheLookingGlass’s Project Euler solutions
 |            | Pypy 3.6+ |br|      |        |               |
 |            | GraalPy 23.1+       |        |               |
 +------------+---------------------+--------+---------------+
-| Rust       | 1.69+               |  7     | |Rust|        |
+| Rust       | 1.69+               |  8     | |Rust|        |
 +------------+---------------------+--------+---------------+
 | Documentation (in progress)               | |Pages|       |
 +-------------------------------------------+---------------+

docs/index.rst

@@ -106,7 +106,7 @@ This project is divided into several Makefiles, connected by a root Makefile whi
 +-----------+------+------+------+------+------+
 |:prob:`5`  |  |d| |      |      |  |d| |  |d| |
 +-----------+------+------+------+------+------+
-|:prob:`6`  |  |d| |      |      |  |d| |      |
+|:prob:`6`  |  |d| |      |      |  |d| |  |d| |
 +-----------+------+------+------+------+------+
 |:prob:`7`  |  |d| |      |      |  |d| |  |d| |
 +-----------+------+------+------+------+------+

rust/src/main.rs

@@ -9,21 +9,21 @@ use rstest::rstest;
 #[cfg(test)]
 use itertools::Itertools;
 
-seq!(N in 0001..=0005 {
+seq!(N in 0001..=0007 {
 mod p~N;
 });
-mod p0007;
 mod p0010;
 mod primes;
 
 type ProblemType = fn() -> u64;
 type ProblemRef<'a> = (&'a str, ProblemType, u64);
-const ANSWERS: [ProblemRef; 7] = [
+const ANSWERS: [ProblemRef; 8] = [
     ("p0001", p0001::p0001, 233168),
     ("p0002", p0002::p0002, 4613732),
     ("p0003", p0003::p0003, 6857),
     ("p0004", p0004::p0004, 906609),
     ("p0005", p0005::p0005, 232792560),
+    ("p0006", p0006::p0006, 25164150),
     ("p0007", p0007::p0007, 104743),
     ("p0010", p0010::p0010, 142913828922),
 ];
@@ -40,7 +40,7 @@ fn main() {
 }
 
 #[cfg(test)]
-seq!(N in 0..7 {
+seq!(N in 0..8 {
 #[rstest]
 #[timeout(Duration::new(60, 0))]
 #(

rust/src/p0006.rs

@@ -0,0 +1,28 @@
+/*
+Project Euler Problem 6
+
+This turned out to be really easy
+
+Problem:
+
+The sum of the squares of the first ten natural numbers is,
+1**2 + 2**2 + ... + 10**2 = 385
+
+The square of the sum of the first ten natural numbers is,
+(1 + 2 + ... + 10)**2 = 55**2 = 3025
+
+Hence the difference between the sum of the squares of the first ten natural
+numbers and the square of the sum is 3025 − 385 = 2640.
+
+Find the difference between the sum of the squares of the first one hundred
+natural numbers and the square of the sum.
+*/
+
+
+pub fn p0006() -> u64 {
+    let group = 1..101;
+    let sum_of_squares = group.clone().fold(0, |x, y| x + y * y);
+    let sum: u64 = group.sum();
+    let square_of_sum = sum * sum;
+    return square_of_sum - sum_of_squares;
+}