Day 11 part 1 done

2022/rust/Cargo.toml

@@ -58,4 +58,60 @@ path = "src/day10.rs"
 name = "day11"
 path = "src/day11.rs"
 
+[[bin]]
+name = "day12"
+path = "src/day12.rs"
+
+[[bin]]
+name = "day13"
+path = "src/day13.rs"
+
+[[bin]]
+name = "day14"
+path = "src/day14.rs"
+
+[[bin]]
+name = "day15"
+path = "src/day15.rs"
+
+[[bin]]
+name = "day16"
+path = "src/day16.rs"
+
+[[bin]]
+name = "day17"
+path = "src/day17.rs"
+
+[[bin]]
+name = "day18"
+path = "src/day18.rs"
+
+[[bin]]
+name = "day19"
+path = "src/day19.rs"
+
+[[bin]]
+name = "day20"
+path = "src/day20.rs"
+
+[[bin]]
+name = "day21"
+path = "src/day21.rs"
+
+[[bin]]
+name = "day22"
+path = "src/day22.rs"
+
+[[bin]]
+name = "day23"
+path = "src/day23.rs"
+
+[[bin]]
+name = "day24"
+path = "src/day24.rs"
+
+[[bin]]
+name = "day25"
+path = "src/day25.rs"
+
 [dependencies]

2022/rust/src/day11.rs

@@ -1,14 +1,148 @@
+use std::str::FromStr;
+
 mod common;
 
-type Input = String;
+#[derive(Debug)]
+enum Operator {
+    Mul,
+    Add,
+}
+
+impl Operator {
+    fn apply(&self, operand: &Operand, old: i64) -> i64 {
+        match self {
+            Self::Mul => old * operand.amount(old),
+            Self::Add => old + operand.amount(old),
+        }
+    }
+}
+
+#[derive(Debug)]
+enum Operand {
+    I64(i64),
+    Old,
+}
+
+impl Operand {
+    fn amount(&self, old: i64) -> i64 {
+        match self {
+            Self::I64(n) => n.clone(),
+            Self::Old => old,
+        }
+    }
+}
+
+impl FromStr for Operand {
+    type Err = ParseOperandError;
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        if let Ok(n) = s.parse::<i64>() {
+            Ok(Self::I64(n))
+        } else {
+            Ok(Self::Old)
+        }
+    }
+}
+
+#[derive(Debug)]
+struct ParseOpError;
+
+#[derive(Debug)]
+struct ParseOperandError;
+
+impl FromStr for Operator {
+    type Err = ParseOpError;
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        match s.bytes().next().unwrap() {
+            43 => Ok(Self::Add),
+            _ => Ok(Self::Mul),
+        }
+    }
+}
+
+#[derive(Debug)]
+struct Monkey {
+    items: Vec<i64>,
+    operator: Operator,
+    operand: Operand,
+    test_div: (i64, usize, usize),
+    num_inspections: usize,
+}
+
+impl Monkey {
+    fn act(&mut self) -> Vec<(i64, usize)> {
+        let mut result = vec![];
+        while let Some(item) = self.items.pop() {
+            self.num_inspections += 1;
+            let new_item = self.operator.apply(&self.operand, item) / 3;
+            if new_item % self.test_div.0 == 0 {
+                result.push((new_item, self.test_div.1));
+            } else {
+                result.push((new_item, self.test_div.2));
+            }
+        }
+        return result;
+    }
+}
+
+#[derive(Debug)]
+struct ParseMonkeyError;
+
+impl FromStr for Monkey {
+    type Err = ParseMonkeyError;
+
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        println!("FROM Jk:{:?}", s);
+        let mut lines = s.split("\n").skip(1);
+        let mut p2 = |s| lines.next().unwrap().split(s).skip(1).next().unwrap();
+        let items = p2(": ")
+            .split(", ")
+            .map(|s| s.parse::<i64>().unwrap())
+            .collect();
+        let oper = p2("old ");
+        let operator = oper.parse::<Operator>().unwrap();
+        let operand = oper[2..].parse::<Operand>().unwrap();
+        let test_div = (
+            p2("by ").parse::<i64>().unwrap(),
+            p2("monkey ").parse::<usize>().unwrap(),
+            p2("monkey ").parse::<usize>().unwrap(),
+        );
+        Ok(Monkey {
+            items,
+            operator,
+            operand,
+            test_div,
+            num_inspections: 0,
+        })
+    }
+}
+
+type Input = Vec<Monkey>;
 type Answer = usize;
 
 fn processed_input(input: &str) -> Input {
-    input.to_owned()
+    input
+        .split("\n\n")
+        .map(|s| s.parse::<Monkey>().unwrap())
+        .collect()
 }
 
-fn part1(input: &Input) -> Answer {
-    100
+fn part1(input: &mut Input) -> Answer {
+    for _round in 0..20 {
+        for monkey_id in 0..input.len() {
+            let monkey = &mut input[monkey_id];
+            let items_goto = monkey.act();
+            for (new_item, monkey_id) in items_goto {
+                input[monkey_id].items.push(new_item);
+            }
+        }
+    }
+
+    let mut num_inspections = input
+        .iter()
+        .map(|m| m.num_inspections)
+        .collect::<Vec<usize>>();
+    num_inspections.sort();
+    num_inspections.iter().rev().take(2).product()
 }
 
 fn part2(input: &Input) -> Answer {
@@ -16,12 +150,10 @@ fn part2(input: &Input) -> Answer {
 }
 
 fn main() {
-    let input_text = common::day_input(panic!(
-        "PUT THE CORRECT DAY NUMBER HERE AND ADD bin TO Cargo.toml"
-    ));
+    let input_text = common::day_input(11);
     eprintln!("{}\n\nAbove is your input file.\n\n", input_text);
-    let input = processed_input(&input_text);
-    common::show_answers(&part1(&input), &part2(&input))
+    let mut input = processed_input(&input_text);
+    common::show_answers(&part1(&mut input), &part2(&input))
     // common::show_both_answers(&both_parts(&input))
 }
 
@@ -33,12 +165,39 @@ fn main() {
 mod tests {
     use super::*;
 
-    const TEST_INPUT: &str = "";
+    const TEST_INPUT: &str = "Monkey 0:
+  Starting items: 79, 98
+  Operation: new = old * 19
+  Test: divisible by 23
+    If true: throw to monkey 2
+    If false: throw to monkey 3
+
+Monkey 1:
+  Starting items: 54, 65, 75, 74
+  Operation: new = old + 6
+  Test: divisible by 19
+    If true: throw to monkey 2
+    If false: throw to monkey 0
+
+Monkey 2:
+  Starting items: 79, 60, 97
+  Operation: new = old * old
+  Test: divisible by 13
+    If true: throw to monkey 1
+    If false: throw to monkey 3
+
+Monkey 3:
+  Starting items: 74
+  Operation: new = old + 3
+  Test: divisible by 17
+    If true: throw to monkey 0
+    If false: throw to monkey 1";
 
     #[test]
     fn test() {
+        let mut input = processed_input(TEST_INPUT);
+        assert_eq!(part1(&mut input), 10605);
         let input = processed_input(TEST_INPUT);
-        assert_eq!(part1(&input), 0);
         assert_eq!(part2(&input), 0);
         // assert_eq!(both_parts(&input), (0, 0));
     }