From 5e8e0ae3ef8cf8fc161049986d5b77d4cd053109 Mon Sep 17 00:00:00 2001
From: Thom Dickson <td3of4@gmail.com>
Date: Mon, 13 Dec 2021 01:21:42 -0500
Subject: [PATCH] Start rust rewrite of old problems

---
 rust-rewrite/day01/Cargo.toml  |    8 +
 rust-rewrite/day01/day01.in    | 2000 ++++++++++++++++++++++++++++++++
 rust-rewrite/day01/src/main.rs |   36 +
 3 files changed, 2044 insertions(+)
 create mode 100644 rust-rewrite/day01/Cargo.toml
 create mode 100644 rust-rewrite/day01/day01.in
 create mode 100644 rust-rewrite/day01/src/main.rs

diff --git a/rust-rewrite/day01/Cargo.toml b/rust-rewrite/day01/Cargo.toml
new file mode 100644
index 0000000..5a61072
--- /dev/null
+++ b/rust-rewrite/day01/Cargo.toml
@@ -0,0 +1,8 @@
+[package]
+name = "day01"
+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/rust-rewrite/day01/day01.in b/rust-rewrite/day01/day01.in
new file mode 100644
index 0000000..bcc016c
--- /dev/null
+++ b/rust-rewrite/day01/day01.in
@@ -0,0 +1,2000 @@
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diff --git a/rust-rewrite/day01/src/main.rs b/rust-rewrite/day01/src/main.rs
new file mode 100644
index 0000000..eba81ac
--- /dev/null
+++ b/rust-rewrite/day01/src/main.rs
@@ -0,0 +1,36 @@
+use std::fs;
+
+fn main() {
+    let file = fs::read_to_string("day01.in").unwrap();
+
+    let mut nums: Vec<u32> = vec![];
+    for line in file.split('\n') {
+        if line != "" {
+            nums.push(u32::from_str_radix(line, 10).unwrap());
+        }
+    }
+    let count_a = count_inc(&nums);
+
+    let mut nums2: Vec<u32> = vec![];
+    for (i, _) in nums.iter().enumerate() {
+        if i + 2 < nums.len() {
+            nums2.push(nums[i..i + 3].iter().sum());
+        }
+    }
+    let count_b = count_inc(&nums2);
+
+    println!("Part 1: {}", count_a);
+    println!("Part 2: {}", count_b);
+}
+
+fn count_inc(input: &Vec<u32>) -> usize {
+    let mut count = 0;
+    let mut prev: u32 = 0;
+    for num in input.iter() {
+        if num > &prev && prev != 0 {
+            count += 1;
+        }
+        prev = *num;
+    }
+    count
+}