From 9324fbc1cfd397d803a255c958d51d258bd4aa7c Mon Sep 17 00:00:00 2001
From: Yigit Sever
Date: Wed, 1 Dec 2021 15:02:57 +0300
Subject: 2021, day1: add rust soln

---
 2021/day1/day1/Cargo.toml  |    8 +
 2021/day1/day1/input       | 2000 ++++++++++++++++++++++++++++++++++++++++++++
 2021/day1/day1/src/main.rs |   30 +
 3 files changed, 2038 insertions(+)
 create mode 100644 2021/day1/day1/Cargo.toml
 create mode 100644 2021/day1/day1/input
 create mode 100644 2021/day1/day1/src/main.rs

(limited to '2021/day1')

diff --git a/2021/day1/day1/Cargo.toml b/2021/day1/day1/Cargo.toml
new file mode 100644
index 0000000..a3c4e52
--- /dev/null
+++ b/2021/day1/day1/Cargo.toml
@@ -0,0 +1,8 @@
+[package]
+name = "day1"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
diff --git a/2021/day1/day1/input b/2021/day1/day1/input
new file mode 100644
index 0000000..97c1adf
--- /dev/null
+++ b/2021/day1/day1/input
@@ -0,0 +1,2000 @@
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diff --git a/2021/day1/day1/src/main.rs b/2021/day1/day1/src/main.rs
new file mode 100644
index 0000000..e7c1466
--- /dev/null
+++ b/2021/day1/day1/src/main.rs
@@ -0,0 +1,30 @@
+use std::fs::File;
+use std::io::{BufRead, BufReader};
+
+fn part1(nums: &Vec<u32>) -> usize {
+    nums.windows(2).filter(|s| s[1] > s[0]).count()
+}
+
+fn part2(nums: &Vec<u32>) -> usize {
+    nums.iter()
+        .zip(nums.iter().skip(3))
+        .filter(|(a, b)| b > a)
+        .count()
+}
+
+fn main() {
+    let filename = "input";
+
+    let mut depth: Vec<u32> = Vec::new();
+
+    let file = File::open(filename).unwrap_or_else(|_| panic!("No such file: {}", filename));
+    let reader = BufReader::new(file);
+
+    for line in reader.lines() {
+        let line = line.unwrap();
+        depth.push(line.parse().unwrap());
+    }
+
+    println!("{}", part1(&depth));
+    println!("{}", part2(&depth));
+}
-- 
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