1 files changed, 107 insertions, 0 deletions
diff --git a/aoc22/day5/src/main.rs b/aoc22/day5/src/main.rs
new file mode 100644
index 0000000..714e67c
--- /dev/null
+++ b/aoc22/day5/src/main.rs
@@ -0,0 +1,107 @@
+fn main() {
+    part1();
+    part2();
+}
+
+fn part1() {
+    let input = include_str!("../input");
+
+    let mut split = input.split("\n\n");
+    let start_state = split.next().unwrap();
+    let mut state: Vec<Vec<char>> = vec![vec![]; 9];
+    for line in start_state.lines() {
+        let mut index = 1;
+        let mut i = 0;
+        while index < line.len() {
+            let c = line.chars().nth(index).unwrap();
+            if c.is_ascii_uppercase() {
+                state[i].push(c);
+            }
+            index += 4;
+            i += 1;
+        }
+    }
+    for s in state.iter_mut() {
+        s.reverse();
+    }
+    println!("{:?}", state);
+    let instructions: Vec<Vec<usize>> = split
+        .next()
+        .unwrap()
+        .lines()
+        .map(|line| {
+            line.split(" ")
+                .flat_map(|w| w.parse::<usize>())
+                .collect::<Vec<usize>>()
+        })
+        .collect();
+
+    for instr in instructions {
+        let amt = instr[0];
+        let src = instr[1];
+        let dst = instr[2];
+
+        for _ in 0..amt {
+            let c = state[src - 1].pop().unwrap();
+            state[dst - 1].push(c);
+        }
+    }
+
+    for s in state {
+        print!("{}", s.last().unwrap());
+    }
+    println!();
+}
+
+fn part2() {
+    let input = include_str!("../input");
+
+    let mut split = input.split("\n\n");
+    let start_state = split.next().unwrap();
+    let mut state: Vec<Vec<char>> = vec![vec![]; 9];
+    for line in start_state.lines() {
+        let mut index = 1;
+        let mut i = 0;
+        while index < line.len() {
+            let c = line.chars().nth(index).unwrap();
+            if c.is_ascii_uppercase() {
+                state[i].push(c);
+            }
+            index += 4;
+            i += 1;
+        }
+    }
+    for s in state.iter_mut() {
+        s.reverse();
+    }
+    let instructions: Vec<Vec<usize>> = split
+        .next()
+        .unwrap()
+        .lines()
+        .map(|line| {
+            line.split(" ")
+                .flat_map(|w| w.parse::<usize>())
+                .collect::<Vec<usize>>()
+        })
+        .collect();
+
+    for instr in instructions {
+        let amt = instr[0];
+        let src = instr[1];
+        let dst = instr[2];
+
+        let mut stack = vec![];
+        for _ in 0..amt {
+            let c = state[src - 1].pop().unwrap();
+            stack.push(c);
+        }
+        for _ in 0..amt {
+            state[dst - 1].push(stack.pop().unwrap());
+        }
+    }
+
+    for s in state {
+        print!("{}", s.last().unwrap());
+    }
+    println!();
+}