Solve Part 1

Cargo.toml

@@ -6,3 +6,4 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+regex = "1"

src/input.txt

@@ -0,0 +1,512 @@
+[T]     [Q]             [S]        
+[R]     [M]             [L] [V] [G]
+[D] [V] [V]             [Q] [N] [C]
+[H] [T] [S] [C]         [V] [D] [Z]
+[Q] [J] [D] [M]     [Z] [C] [M] [F]
+[N] [B] [H] [N] [B] [W] [N] [J] [M]
+[P] [G] [R] [Z] [Z] [C] [Z] [G] [P]
+[B] [W] [N] [P] [D] [V] [G] [L] [T]
+ 1   2   3   4   5   6   7   8   9 
+
+move 5 from 4 to 9
+move 3 from 5 to 1
+move 12 from 9 to 6
+move 1 from 6 to 9
+move 3 from 2 to 8
+move 6 from 3 to 9
+move 2 from 2 to 9
+move 2 from 3 to 5
+move 9 from 8 to 1
+move 1 from 6 to 9
+move 1 from 8 to 3
+move 14 from 1 to 2
+move 8 from 2 to 6
+move 2 from 2 to 7
+move 2 from 5 to 8
+move 5 from 2 to 6
+move 9 from 7 to 8
+move 1 from 9 to 8
+move 5 from 6 to 9
+move 1 from 3 to 8
+move 1 from 7 to 5
+move 1 from 1 to 5
+move 4 from 1 to 7
+move 15 from 6 to 1
+move 4 from 7 to 6
+move 2 from 5 to 7
+move 9 from 8 to 7
+move 13 from 1 to 3
+move 8 from 6 to 9
+move 1 from 6 to 8
+move 1 from 7 to 5
+move 2 from 1 to 3
+move 4 from 7 to 1
+move 13 from 3 to 6
+move 2 from 1 to 3
+move 1 from 5 to 8
+move 2 from 3 to 4
+move 5 from 7 to 1
+move 4 from 1 to 9
+move 2 from 4 to 5
+move 4 from 6 to 2
+move 3 from 2 to 5
+move 6 from 8 to 1
+move 7 from 6 to 7
+move 1 from 3 to 5
+move 1 from 2 to 4
+move 8 from 1 to 8
+move 4 from 6 to 2
+move 3 from 5 to 3
+move 1 from 4 to 3
+move 2 from 1 to 3
+move 8 from 8 to 5
+move 2 from 3 to 8
+move 4 from 5 to 3
+move 1 from 9 to 2
+move 1 from 8 to 3
+move 1 from 2 to 1
+move 15 from 9 to 3
+move 6 from 7 to 5
+move 1 from 7 to 3
+move 2 from 2 to 8
+move 6 from 9 to 4
+move 22 from 3 to 6
+move 3 from 8 to 6
+move 1 from 1 to 2
+move 2 from 9 to 8
+move 6 from 4 to 7
+move 6 from 7 to 2
+move 16 from 6 to 9
+move 8 from 2 to 1
+move 4 from 6 to 1
+move 2 from 3 to 4
+move 9 from 5 to 4
+move 1 from 7 to 9
+move 1 from 6 to 2
+move 3 from 5 to 7
+move 16 from 9 to 4
+move 2 from 7 to 1
+move 4 from 6 to 3
+move 1 from 9 to 5
+move 1 from 9 to 7
+move 1 from 7 to 6
+move 1 from 7 to 9
+move 2 from 9 to 2
+move 1 from 6 to 1
+move 2 from 8 to 1
+move 11 from 4 to 2
+move 9 from 2 to 6
+move 9 from 6 to 1
+move 15 from 4 to 6
+move 1 from 4 to 2
+move 1 from 5 to 3
+move 6 from 6 to 4
+move 3 from 2 to 1
+move 2 from 4 to 6
+move 3 from 6 to 2
+move 7 from 6 to 2
+move 1 from 4 to 7
+move 1 from 7 to 2
+move 5 from 3 to 6
+move 1 from 5 to 4
+move 1 from 4 to 5
+move 8 from 1 to 6
+move 1 from 4 to 8
+move 12 from 6 to 1
+move 1 from 3 to 4
+move 1 from 4 to 1
+move 1 from 3 to 4
+move 2 from 6 to 5
+move 31 from 1 to 7
+move 2 from 5 to 7
+move 1 from 8 to 2
+move 1 from 5 to 8
+move 1 from 8 to 6
+move 3 from 4 to 9
+move 3 from 9 to 4
+move 2 from 4 to 3
+move 2 from 1 to 6
+move 2 from 3 to 8
+move 1 from 4 to 9
+move 4 from 2 to 9
+move 17 from 7 to 8
+move 3 from 8 to 2
+move 2 from 9 to 4
+move 4 from 2 to 5
+move 1 from 1 to 4
+move 1 from 9 to 3
+move 8 from 8 to 4
+move 1 from 9 to 4
+move 4 from 8 to 3
+move 8 from 2 to 5
+move 2 from 2 to 3
+move 1 from 2 to 1
+move 1 from 8 to 4
+move 2 from 8 to 1
+move 1 from 7 to 2
+move 1 from 8 to 6
+move 3 from 4 to 5
+move 8 from 4 to 7
+move 1 from 2 to 8
+move 1 from 8 to 1
+move 2 from 4 to 7
+move 8 from 5 to 9
+move 7 from 5 to 2
+move 6 from 3 to 1
+move 6 from 1 to 2
+move 9 from 9 to 4
+move 5 from 7 to 4
+move 2 from 1 to 2
+move 9 from 4 to 2
+move 3 from 6 to 2
+move 1 from 6 to 8
+move 1 from 8 to 9
+move 1 from 3 to 5
+move 6 from 7 to 5
+move 4 from 4 to 2
+move 19 from 2 to 3
+move 1 from 4 to 6
+move 7 from 7 to 5
+move 2 from 1 to 8
+move 12 from 3 to 4
+move 3 from 4 to 1
+move 1 from 6 to 3
+move 8 from 5 to 9
+move 3 from 9 to 7
+move 6 from 4 to 3
+move 3 from 1 to 2
+move 13 from 3 to 7
+move 3 from 4 to 6
+move 4 from 9 to 4
+move 14 from 7 to 8
+move 3 from 5 to 2
+move 3 from 2 to 6
+move 1 from 6 to 2
+move 1 from 3 to 9
+move 4 from 4 to 6
+move 11 from 2 to 7
+move 2 from 9 to 6
+move 3 from 5 to 6
+move 1 from 9 to 7
+move 14 from 6 to 5
+move 1 from 5 to 1
+move 4 from 5 to 8
+move 2 from 5 to 6
+move 4 from 2 to 5
+move 1 from 2 to 9
+move 14 from 8 to 5
+move 2 from 8 to 4
+move 3 from 8 to 7
+move 5 from 5 to 4
+move 13 from 5 to 7
+move 5 from 7 to 6
+move 31 from 7 to 9
+move 7 from 6 to 7
+move 6 from 5 to 7
+move 1 from 8 to 9
+move 1 from 5 to 3
+move 1 from 3 to 5
+move 1 from 1 to 8
+move 6 from 4 to 3
+move 1 from 8 to 5
+move 1 from 4 to 1
+move 33 from 9 to 3
+move 13 from 7 to 1
+move 29 from 3 to 2
+move 3 from 3 to 8
+move 1 from 5 to 2
+move 20 from 2 to 6
+move 19 from 6 to 4
+move 1 from 7 to 4
+move 5 from 1 to 7
+move 1 from 8 to 7
+move 2 from 8 to 5
+move 10 from 2 to 8
+move 6 from 3 to 9
+move 4 from 7 to 1
+move 1 from 3 to 5
+move 1 from 1 to 2
+move 1 from 7 to 6
+move 1 from 2 to 8
+move 1 from 8 to 7
+move 4 from 9 to 7
+move 2 from 5 to 2
+move 1 from 8 to 5
+move 1 from 8 to 6
+move 7 from 8 to 3
+move 2 from 9 to 4
+move 3 from 5 to 1
+move 2 from 2 to 5
+move 5 from 7 to 8
+move 10 from 4 to 1
+move 5 from 8 to 5
+move 10 from 1 to 3
+move 2 from 6 to 4
+move 1 from 7 to 3
+move 1 from 8 to 1
+move 3 from 5 to 8
+move 12 from 4 to 7
+move 3 from 5 to 3
+move 16 from 1 to 7
+move 2 from 3 to 7
+move 1 from 5 to 6
+move 3 from 8 to 4
+move 1 from 4 to 7
+move 1 from 6 to 3
+move 14 from 3 to 1
+move 5 from 3 to 8
+move 1 from 3 to 5
+move 1 from 7 to 6
+move 1 from 6 to 2
+move 13 from 7 to 2
+move 1 from 5 to 3
+move 3 from 4 to 2
+move 1 from 3 to 5
+move 3 from 8 to 9
+move 2 from 8 to 9
+move 1 from 6 to 4
+move 5 from 2 to 4
+move 3 from 2 to 5
+move 7 from 7 to 3
+move 7 from 4 to 7
+move 5 from 3 to 7
+move 8 from 2 to 3
+move 5 from 9 to 5
+move 11 from 1 to 9
+move 4 from 3 to 1
+move 1 from 2 to 7
+move 4 from 1 to 7
+move 22 from 7 to 3
+move 5 from 3 to 4
+move 1 from 7 to 1
+move 1 from 1 to 4
+move 3 from 4 to 6
+move 3 from 1 to 3
+move 2 from 6 to 1
+move 2 from 4 to 9
+move 13 from 9 to 1
+move 1 from 6 to 5
+move 4 from 7 to 1
+move 3 from 1 to 6
+move 19 from 3 to 9
+move 5 from 3 to 1
+move 18 from 9 to 8
+move 1 from 9 to 3
+move 11 from 1 to 7
+move 1 from 4 to 5
+move 13 from 8 to 1
+move 7 from 5 to 8
+move 7 from 8 to 5
+move 3 from 6 to 5
+move 2 from 3 to 9
+move 1 from 3 to 7
+move 5 from 5 to 2
+move 10 from 1 to 5
+move 9 from 7 to 9
+move 11 from 5 to 2
+move 2 from 8 to 4
+move 1 from 4 to 3
+move 2 from 7 to 3
+move 1 from 7 to 4
+move 3 from 8 to 3
+move 8 from 5 to 2
+move 2 from 3 to 8
+move 4 from 3 to 8
+move 6 from 2 to 6
+move 5 from 1 to 8
+move 8 from 2 to 7
+move 2 from 4 to 7
+move 9 from 2 to 9
+move 4 from 7 to 8
+move 5 from 1 to 8
+move 3 from 7 to 4
+move 1 from 8 to 3
+move 3 from 7 to 2
+move 3 from 1 to 9
+move 1 from 4 to 9
+move 1 from 6 to 3
+move 18 from 8 to 5
+move 1 from 8 to 2
+move 2 from 4 to 9
+move 3 from 2 to 1
+move 2 from 2 to 3
+move 24 from 9 to 8
+move 3 from 3 to 7
+move 15 from 8 to 2
+move 12 from 2 to 5
+move 1 from 7 to 4
+move 1 from 3 to 1
+move 28 from 5 to 4
+move 1 from 7 to 9
+move 2 from 2 to 1
+move 4 from 6 to 3
+move 1 from 5 to 3
+move 1 from 5 to 9
+move 1 from 2 to 6
+move 5 from 3 to 5
+move 8 from 4 to 2
+move 2 from 6 to 2
+move 1 from 7 to 3
+move 4 from 2 to 8
+move 3 from 1 to 2
+move 5 from 2 to 5
+move 3 from 5 to 4
+move 2 from 1 to 5
+move 2 from 2 to 1
+move 4 from 9 to 2
+move 7 from 8 to 9
+move 1 from 3 to 1
+move 1 from 1 to 7
+move 2 from 8 to 3
+move 4 from 9 to 3
+move 9 from 5 to 7
+move 3 from 3 to 5
+move 1 from 5 to 3
+move 7 from 7 to 9
+move 1 from 7 to 9
+move 1 from 5 to 9
+move 1 from 5 to 1
+move 1 from 8 to 5
+move 9 from 9 to 1
+move 2 from 7 to 2
+move 1 from 5 to 6
+move 4 from 3 to 2
+move 11 from 2 to 4
+move 1 from 8 to 4
+move 1 from 8 to 2
+move 1 from 2 to 8
+move 1 from 6 to 5
+move 1 from 8 to 6
+move 6 from 1 to 7
+move 1 from 5 to 6
+move 1 from 6 to 5
+move 3 from 9 to 8
+move 3 from 8 to 1
+move 3 from 7 to 8
+move 1 from 6 to 9
+move 1 from 2 to 4
+move 1 from 9 to 7
+move 2 from 7 to 9
+move 10 from 1 to 6
+move 2 from 9 to 3
+move 1 from 5 to 7
+move 3 from 7 to 5
+move 3 from 5 to 3
+move 4 from 6 to 3
+move 18 from 4 to 2
+move 3 from 4 to 1
+move 1 from 1 to 3
+move 2 from 1 to 2
+move 8 from 2 to 9
+move 1 from 4 to 7
+move 1 from 7 to 1
+move 3 from 9 to 2
+move 3 from 8 to 6
+move 1 from 4 to 9
+move 7 from 2 to 8
+move 7 from 6 to 7
+move 3 from 9 to 2
+move 3 from 2 to 5
+move 6 from 4 to 6
+move 2 from 5 to 6
+move 3 from 3 to 6
+move 6 from 6 to 3
+move 5 from 7 to 5
+move 2 from 4 to 8
+move 5 from 5 to 2
+move 1 from 7 to 2
+move 4 from 6 to 4
+move 1 from 7 to 8
+move 1 from 6 to 4
+move 1 from 5 to 7
+move 1 from 3 to 4
+move 1 from 6 to 4
+move 2 from 9 to 1
+move 3 from 1 to 3
+move 1 from 3 to 1
+move 9 from 2 to 1
+move 8 from 1 to 5
+move 1 from 7 to 1
+move 1 from 9 to 1
+move 4 from 5 to 7
+move 4 from 7 to 5
+move 1 from 1 to 9
+move 5 from 2 to 4
+move 1 from 9 to 6
+move 8 from 8 to 9
+move 18 from 4 to 9
+move 3 from 5 to 4
+move 2 from 6 to 5
+move 1 from 8 to 5
+move 17 from 9 to 6
+move 2 from 8 to 1
+move 1 from 4 to 6
+move 8 from 6 to 3
+move 1 from 1 to 8
+move 5 from 5 to 3
+move 1 from 1 to 7
+move 1 from 8 to 6
+move 2 from 4 to 5
+move 6 from 9 to 4
+move 1 from 7 to 5
+move 7 from 6 to 8
+move 2 from 6 to 5
+move 6 from 8 to 3
+move 1 from 9 to 6
+move 2 from 9 to 5
+move 1 from 3 to 1
+move 1 from 8 to 6
+move 7 from 5 to 6
+move 7 from 6 to 7
+move 5 from 4 to 9
+move 1 from 4 to 5
+move 2 from 9 to 6
+move 3 from 1 to 7
+move 5 from 6 to 8
+move 1 from 1 to 5
+move 21 from 3 to 6
+move 3 from 7 to 2
+move 2 from 9 to 3
+move 1 from 9 to 7
+move 5 from 5 to 7
+move 7 from 6 to 7
+move 14 from 7 to 1
+move 3 from 2 to 8
+move 12 from 1 to 4
+move 5 from 7 to 6
+move 1 from 7 to 4
+move 8 from 8 to 3
+move 8 from 3 to 5
+move 6 from 5 to 6
+move 1 from 5 to 3
+move 2 from 1 to 8
+move 2 from 8 to 3
+move 10 from 3 to 7
+move 8 from 4 to 3
+move 3 from 4 to 9
+move 3 from 9 to 2
+move 1 from 2 to 5
+move 2 from 2 to 9
+move 13 from 3 to 1
+move 1 from 4 to 1
+move 2 from 1 to 7
+move 1 from 5 to 8
+move 1 from 9 to 6
+move 1 from 9 to 2
+move 1 from 4 to 9
+move 8 from 6 to 2
+move 1 from 9 to 5
+move 1 from 2 to 8
+move 1 from 5 to 9
+move 2 from 2 to 3
+move 12 from 6 to 8
+move 1 from 3 to 7
+move 8 from 8 to 4
+move 1 from 9 to 1
+move 13 from 1 to 3
+move 2 from 4 to 5
+move 12 from 7 to 2
+move 1 from 5 to 8
+move 3 from 3 to 8
+move 2 from 4 to 1
+move 1 from 1 to 9

src/main.rs

@@ -1,3 +1,106 @@
-fn main() {
+use regex::Regex;
-    println!("Hello, world!");
+
+const DATA: &'static str = include_str!("input.txt");
+
+fn split_into_crates_and_procedures(data: &str) -> (&str, &str)
+{
+    return data.split_once("\n\n").expect("Input data is not correctly structured");
+}
+
+fn process_crates(crates_and_numbers: &str) -> Vec<Vec<char>>
+{
+    let (crates, _) = crates_and_numbers.rsplit_once("\n").expect("Input data is not correctly structured");
+    let mut result: Vec<Vec<char>> = Vec::new();
+    for line in crates.lines()
+    {
+        let mut index = 0usize;
+        let mut whitespace = 0u32;
+        for c in line.chars()
+        {
+            if c.is_whitespace()
+            {
+                whitespace += 1;
+                if whitespace == 4
+                {
+                    if result.len() == index {
+                        let inner_vec: Vec<char> = Vec::new();
+                        result.push(inner_vec);
+                    }
+                    index += 1;
+                    whitespace = 0;
+                }
+                continue;
+            }
+
+            whitespace = 0;
+
+            if c == '['
+            {
+                continue;
+            }
+
+            if c.is_ascii_uppercase()
+            {
+                if let Some(inner_vec) = result.get_mut(index) {
+                    inner_vec.push(c);
+                } else {
+                    assert!(result.len() == index);
+                    let mut inner_vec: Vec<char> = Vec::new();
+                    inner_vec.push(c);
+                    result.push(inner_vec);
+                }
+            }
+
+            if c == ']'
+            {
+                index += 1;
+                continue;
+            }
+        }
+    }
+    for vec in result.iter_mut()
+    {
+        vec.reverse();
+    }
+    result
+}
+
+fn part1()
+{
+    let (crates, procedures) = split_into_crates_and_procedures(DATA);
+    let mut crate_vec = process_crates(crates);
+
+    let procedure_regex = Regex::new(r"move (\d+) from (\d+) to (\d+)").unwrap();
+
+    for cap in procedure_regex.captures_iter(procedures)
+    {
+        let crates_moved: i32 = cap[1].parse().unwrap();
+        let starting_stack_index: usize = cap[2].parse().unwrap();
+        let ending_stack_index: usize = cap[3].parse().unwrap();
+        for _ in 0..crates_moved
+        {
+            let current_crate: char;
+            {
+                let starting_stack = crate_vec.get_mut(starting_stack_index-1).unwrap();
+                current_crate = starting_stack.pop().unwrap();
+            }
+
+            let ending_stack = crate_vec.get_mut(ending_stack_index-1).unwrap();
+
+            ending_stack.push(current_crate);
+        }
+    }
+
+    let mut result = String::new();
+
+    for stack in crate_vec
+    {
+        result.push(*stack.last().unwrap());
+    }
+
+    println!("Final layout is {}", result.as_str());
+}
+
+fn main() {
+    part1();
 }