From 4e98bf2115bc95870dafb50f0cf24a73b82142a6 Mon Sep 17 00:00:00 2001
From: Amneesh Singh <natto@weirdnatto.in>
Date: Thu, 27 Oct 2022 04:16:43 +0530
Subject: [PATCH] rust: add p1, p2

Signed-off-by: Amneesh Singh <natto@weirdnatto.in>
---
 rust/Cargo.toml |  8 ++++++++
 rust/gentoml    |  4 +---
 rust/src/lib.rs | 11 +++++++++++
 rust/src/p1.rs  |  4 ++++
 rust/src/p2.rs  |  6 ++++++
 5 files changed, 30 insertions(+), 3 deletions(-)
 create mode 100644 rust/src/p1.rs
 create mode 100644 rust/src/p2.rs

diff --git a/rust/Cargo.toml b/rust/Cargo.toml
index d22155a..e07a449 100644
--- a/rust/Cargo.toml
+++ b/rust/Cargo.toml
@@ -2,3 +2,11 @@
 name = "eulerfunt"
 version = "0.1.0"
 edition = "2021"
+
+[[bin]]
+name = "p1"
+path = "./src/p1.rs"
+
+[[bin]]
+name = "p2"
+path = "./src/p2.rs"
diff --git a/rust/gentoml b/rust/gentoml
index 951a0d8..221a055 100755
--- a/rust/gentoml
+++ b/rust/gentoml
@@ -10,9 +10,7 @@ version = "0.1.0"
 edition = "2021"
 EOF
 
-if ! [ -e ./src/p*.rs ]; then
-    exit 0
-fi
+[[ ! $(ls ./src/p*.rs) ]] && exit 0
 
 for problem in ./src/p*.rs; do
   file=${problem##*/}
diff --git a/rust/src/lib.rs b/rust/src/lib.rs
index e69de29..6c90bcc 100644
--- a/rust/src/lib.rs
+++ b/rust/src/lib.rs
@@ -0,0 +1,11 @@
+pub fn fib_till(lim: u32) -> Vec<u32> {
+    let mut ret: Vec<u32> = vec![1, 2];
+    let mut n: usize = 2;
+
+    while ret[n - 1] <= lim {
+        ret.push(ret[n - 1] + ret[n - 2]);
+        n += 1;
+    }
+
+    ret
+}
diff --git a/rust/src/p1.rs b/rust/src/p1.rs
new file mode 100644
index 0000000..f2b18de
--- /dev/null
+++ b/rust/src/p1.rs
@@ -0,0 +1,4 @@
+fn main() {
+    let multiple_sum = |x| (x..1000).step_by(x).into_iter().sum::<usize>();
+    print!("{}", multiple_sum(3) + multiple_sum(5) - multiple_sum(15));
+}
diff --git a/rust/src/p2.rs b/rust/src/p2.rs
new file mode 100644
index 0000000..9cd020a
--- /dev/null
+++ b/rust/src/p2.rs
@@ -0,0 +1,6 @@
+use eulerfunt::fib_till;
+
+fn main() {
+    let evenfib = fib_till(4000000).into_iter().filter(|x| x % 2 == 0);
+    print!("{}", evenfib.sum::<u32>());
+}