First couple of days in 2016 in Rust

.gitignore

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 __pycache__/
+*.lock
+target/

.idea/.gitignore

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+# Default ignored files
+/shelf/
+/workspace.xml
+# Datasource local storage ignored files
+/../../../../../../:\Users\Terrana\Documents\advent-of-code\.idea/dataSources/
+/dataSources.local.xml
+# Editor-based HTTP Client requests
+/httpRequests/

.idea/misc.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.7" project-jdk-type="Python SDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>

.idea/modules.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/2015/2015.iml" filepath="$PROJECT_DIR$/2015/2015.iml" />
+      <module fileurl="file://$PROJECT_DIR$/2019/2019.iml" filepath="$PROJECT_DIR$/2019/2019.iml" />
+      <module fileurl="file://$PROJECT_DIR$/2016/aoc2016.iml" filepath="$PROJECT_DIR$/2016/aoc2016.iml" />
+    </modules>
+  </component>
+</project>

.idea/vcs.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="" vcs="Git" />
+  </component>
+</project>

2015/2015.iml

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+<?xml version="1.0" encoding="UTF-8"?>
+<module type="PYTHON_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$" />
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

2016/Cargo.toml

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+[package]
+name = "advent-of-code"
+version = "0.1.0"
+authors = ["Terrana Ninetailed <terrana@ninetailed.net>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

2016/aoc2016.iml

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+<?xml version="1.0" encoding="UTF-8"?>
+<module type="RUST_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

2016/resources/day02.input

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+RLRLLLULULULUUDUULULRDDLURURDDLDUUDDLRDDUUUDDRUDLRRDDUDUUDULUDRDULRUDRULRDRUDLDDULRRDLDRLUDDLLDRDDDUDDLUDUDULDRLLDRLULRLURDLULRUUUDRULLUUDLRDLDDUDRRRLDLRUUURRLDDRRRURLLULDUULLDRLRDLLDURDLDDULLDDLDLUURRRURLRURLLRRDURLDUDDLULUUULULLLDRRRRRLULRDUDURURLULRURRRLLUURDURULRRUULDRDLULDLLUDLUDRLUDLRRLDLLDLDUDDLULLDRULRLRULDURRDLDLLUDRLLDRRDLDUDUURUURDUUDDDLDLDDRDLUDLDUUUUDLDRLRURDLURURDLLLUURURDRDLUDLLRUDULLLDLULLULLDLDDRDRRRUDDDUDDDDRULLLLRLDDLLRDRLLLRRLDRRUDRUUURLLLRULRRDURDLDRLDDUUDUUURRLRRUDLDLDDRUDLULLUUDUUUDLUDDRUULLLURUDDDDLRUDDLLLRUR
+LDLRLDDDLUDRDRRUDUURLRULLUDDRLURLUULDLLRLLUDLRLRUDLULRLRRLRURLDDDURUDUUURDRLDDLUUUDRUDUDDDLLURLLULRUULLUDRULUDDULDUDUDULLDRUUUULRDUUDLUDURDLLRLLRLUUDUUDRLLLRULUURUDLDRLLDUDLDDRULDULDURRLDDDUDUDDRUDUDRDURLLLLLULDRDDLLUDULLLUDRURLDLDLDULLDDRURRLUDDRLURLULRLDDDUUUURLRDLRURDDURLDLRRLLRLRLUURRLLDDLDRLRDUDDLLDDDURUUDURLRRDUULRRDDRRUULDRLRUDRRLDDRLDRULLDLDURRULDURRRDLRRLRLLLRLDRLLULRRLLLLLDLDDULDLLDLLDUUDDRLURUUUUULRDDLRDLRDRDRDLUDDLDDRULLUDDRLDLLUDRLUURRLUDURURLLRURRURRLRLLRLURURDDDDRRLURDUULLUU
+LLRRDURRDLDULRDUDLRDRDRURULDURUDRRURDDDRLDLDRDRDRDRULDUURLULDDUURUULUDULLDUDLLLLDLLLDRLUUULLULDDRRUDDULLLULRDRULDDULDUDRDDLUUURULDLLUDUUUUURUDLLDRDULLRULLDURDRLLDLDRDDURUULUDURRRUULLDUUDDURDURLDLRRLLDURDDLRRRUDLRRRDLDRLUDLUDRDRLDDLLLRLLRURDLRDUUUURRLULDDLDLLLUDRDRLRRDURDDLURDLDDDULLLRRLDDDRULDDDLRRDULUUUDRRULDDLLLURDRRLLLUULDRRRUURRDDLULDRLULDDDLDULDRRRULRULLURLURULLLLRUDRRRDRDRDLDULURLRRRRLRUDDRRRUURUURLLRURURUURRURRDLDLLUDRRRDUDDRDURLLRLRRULD
+DULRRDRLRLUDLLURURLLRLRDLLDLLDRDUURLRUUUDLLDUUDDUULDUULLRUDRURLUDRDLRUDDDLULUDLLDRULULLLDRRULDLLUURLRRRLDRDLDRURRRRDLRUUDULLRLLLDLRUDLDUUDRLDLRDRLRDLDDDUDLRUDLDDLLLDRLLRRUUDRDDUUURURRRUUDLRRDDRUDLDDULULDLRRLRDDUDRUURRUULURLURUDRRURRRULDDDDURDLUUULUULULRDLRRRRRURURRLRUULDUUURRDRRDLDUUUULLULLLLUDLUUDUURRDLDLRRRLUUURULDULDLDRLLURDRUULLLLLULLLDRURURRUDRRRRUDUDUDRUDUDRDRULUUDRURDDUUDLDLDUURUDURLRLRRDRDRDLLDUDDULLRDLDDRLLDLRDURDDULLLDLLLULDLUUUDLDRDLURUURDDLRDLLLLLRLURDLLLULLRRLU
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

2016/src/day01.rs

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+use std::str::Chars;
+use std::num::ParseIntError;
+use std::collections::HashSet;
+
+const INPUT_DATA: &'static str = "L5, R1, R3, L4, R3, R1, L3, L2, R3, L5, L1, L2, R5, L1, R5, R1, \
+L4, R1, R3, L4, L1, R2, R5, R3, R1, R1, L1, R1, L1, L2, L1, R2, L5, L188, L4, R1, R4, L3, R47, R1, \
+L1, R77, R5, L2, R1, L2, R4, L5, L1, R3, R187, L4, L3, L3, R2, L3, L5, L4, L4, R1, R5, L4, L3, L3, \
+L3, L2, L5, R1, L2, R5, L3, L4, R4, L5, R3, R4, L2, L1, L4, R1, L3, R1, R3, L2, R1, R4, R5, L3, \
+R5, R3, L3, R4, L2, L5, L1, L1, R3, R1, L4, R3, R3, L2, R5, R4, R1, R3, L4, R3, R3, L2, L4, L5, \
+R1, L4, L5, R4, L2, L1, L3, L3, L5, R3, L4, L3, R5, R4, R2, L4, R2, R3, L3, R4, L1, L3, R2, R1, \
+R5, L4, L5, L5, R4, L5, L2, L4, R4, R4, R1, L3, L2, L4, R3";
+
+pub(crate) fn part1() {
+    println!("{}", "Day 1 part 1");
+    let chars: Chars = INPUT_DATA.chars();
+    let mut position: (i32, i32) = (0, 0);
+    let mut direction: (i32, i32) = (0, 1);
+    let mut distance_str: String = String::new();
+    for char in chars {
+        if char == 'L' {
+            direction = (-direction.1, direction.0);
+        } else if char == 'R' {
+            direction = (direction.1, -direction.0)
+        } else if char == ',' {
+            position = do_move(position, direction, distance_str);
+            distance_str = String::new();
+        } else if char >= '0' && char <= '9' {
+            distance_str.push(char);
+        }
+    }
+    position = do_move(position, direction, distance_str);
+    println!("({}, {}) {}", position.0, position.1, position.0.abs() + position.1.abs());
+}
+
+pub(crate) fn part2() {
+    println!("{}", "Day 1 part 2");
+    let mut visited: HashSet<(i32, i32)> = HashSet::new();
+    visited.insert((0,0));
+    let mut position: (i32, i32) = (0, 0);
+    let mut direction: (i32, i32) = (0, 1);
+    for instruction in INPUT_DATA.split(", ") {
+        let (dir_str, distance_str): (&str, &str) = instruction.split_at(1);
+        if dir_str == "L" {
+            direction = (-direction.1, direction.0);
+        } else if dir_str == "R" {
+            direction = (direction.1, -direction.0)
+        }
+        let distance: i32 = distance_str.parse::<i32>().unwrap();
+        for _ in 0..distance {
+            position = add(position, direction);
+            if visited.contains(&position) {
+                println!("{:?} {}", position, position.0.abs() + position.1.abs());
+                return;
+            }
+            visited.insert(position);
+        }
+    }
+}
+
+fn do_move(position: (i32, i32), direction: (i32, i32), distance_str: String) -> (i32, i32) {
+    let result: Result<i32, ParseIntError> = distance_str.parse::<i32>();
+    let distance: i32 = result.unwrap();
+    let new_position = (position.0 + distance * direction.0, position.1 + distance * direction.1);
+    new_position
+}
+
+fn add(t1: (i32,i32), t2: (i32, i32)) -> (i32, i32) {
+    (t1.0 + t2.0, t1.1 + t2.1)
+}

2016/src/day02.rs

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+use std::fs::File;
+use std::io::Read;
+
+pub fn part1() {
+    println!("{}", "Day 2 part 1");
+    let mut input = File::open("resources/day02.input").expect("File open: ");
+    let mut contents = String::new();
+    input.read_to_string(&mut contents).expect("File read: ");
+    println!("Input\n{}", contents);
+}

2016/src/main.rs

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+use std::io;
+use std::collections::HashMap;
+use std::option::Option;
+use std::io::Write;
+use std::hash::Hash;
+
+mod day01;
+mod day02;
+
+struct NavItem<'a> {
+    map: Option<HashMap<&'a str, NavItem<'a>>>,
+    function: Option<fn()>
+}
+impl<'a> NavItem<'a> {
+    pub fn new(map: Option<HashMap<&'a str, NavItem<'a>>>, function: Option<fn()>) -> Self {
+        Self { map, function }
+    }
+}
+
+fn navmap<'a>(map: HashMap<&'a str, NavItem<'a>>) -> NavItem<'a> {
+    NavItem::new(Some(map), None)
+}
+
+fn navfn<'a>(function: fn()) -> NavItem<'a> {
+    NavItem::new(None, Some(function))
+}
+
+fn main() {
+    let mut solutions = HashMap::new();
+    let mut day1 = HashMap::new();
+    day1.insert("1", navfn(day01::part1));
+    day1.insert("2", navfn(day01::part2));
+    solutions.insert("1", navmap(day1));
+    let mut day2 = HashMap::new();
+    day2.insert("1", navfn(day02::part1));
+    solutions.insert("2", navmap(day2));
+    let mut selection= String::new();
+    print!("{}", "> ");
+    match io::stdout().flush() {
+        Ok(_) => {},
+        Err(e) => {
+            println!("{:?}", e);
+            return;
+        }
+    }
+    match io::stdin().read_line(&mut selection) {
+        Ok(_) => {},
+        Err(e) => {
+            println!("{:?}", e);
+            return;
+        }
+    }
+    let mut nav = &NavItem::new(Some(solutions), None);
+    for part in selection.split(' ') {
+        match &nav.map.as_ref() {
+            Some(map) => {
+                nav = &map[part.trim()];
+            },
+            None => {}
+        }
+        match nav.function {
+            Some(f) => {
+                f();
+                break;
+            }
+            None => {}
+        }
+    }
+}

2019/2019.iml

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+<?xml version="1.0" encoding="UTF-8"?>
+<module type="PYTHON_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$" />
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

advent-of-code.iml

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+<?xml version="1.0" encoding="UTF-8"?>
+<module type="PYTHON_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$" />
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>