Added day 1 in Rust and Uiua

2019/inputs/day1.txt

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+119031
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+74024
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+121820
+121214
+

2019/rust/.gitignore

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+/target

2019/rust/Cargo.lock

@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "aoc2019"
+version = "0.1.0"

2019/rust/Cargo.toml

@@ -0,0 +1,11 @@
+[package]
+name = "aoc2019"
+version = "0.1.0"
+edition = "2021"
+
+[lib]
+path = "src/lib.rs"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

2019/rust/src/bin/day1.rs

@@ -0,0 +1,41 @@
+use aoc2019::util::read_file;
+use std::io;
+
+fn fuel(mass: i32) -> i32 {
+    mass / 3 - 2
+}
+
+fn total_fuel(mass: i32) -> i32 {
+    let f = fuel(mass);
+    if f <= 0 {
+        return 0;
+    }
+
+    f + total_fuel(f)
+}
+
+fn part1(lines: &Vec<String>) -> i32 {
+    lines
+        .iter()
+        .map(|l| str::parse::<i32>(l.as_str()))
+        .map(Result::unwrap)
+        .map(fuel)
+        .sum()
+}
+
+fn part2(lines: &Vec<String>) -> i32 {
+    lines
+        .iter()
+        .map(|l| str::parse::<i32>(l.as_str()))
+        .map(Result::unwrap)
+        .map(total_fuel)
+        .sum()
+}
+
+fn main() -> io::Result<()> {
+    let file = read_file()?;
+    println!("{}", part1(&file));
+    println!("{}", part2(&file));
+
+    Ok(())
+}

2019/rust/src/lib.rs

@@ -0,0 +1,2 @@
+pub mod util;
+

2019/rust/src/util.rs

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+use std::{env, fs, io};
+
+pub fn read_file() -> Result<Vec<String>, std::io::Error> {
+    let first_arg = env::args()
+        .nth(1)
+        .ok_or_else(|| io::Error::new(io::ErrorKind::Other, "No file given to read!"))?;
+
+    Ok(fs::read_to_string(first_arg)?
+        .lines()
+        .map(String::from)
+        .filter(|s| !s.is_empty())
+        .collect())
+}

2019/uiua/day1.ua

@@ -0,0 +1,10 @@
+~ "util.ua" ~ Lines
+
+# Util
+Mass ← -2⌊÷3
+
+# Part 1
+/+ Mass ⋕ Lines "../inputs/day1.txt"
+
+# Part 2
+/+∵(/+↘¯1◌⍢(⊃Mass⊂) (>0) :[]) ⋕ Lines "../inputs/day1.txt"

2019/uiua/util.ua

@@ -0,0 +1 @@
+Lines ← ⊜□≠@\n.&fras