day 6

AdventOfCode/Solutions/sol-2023/input/2023/day6.txt

@@ -0,0 +1,2 @@
+Time:        59     70     78     78
+Distance:   430   1218   1213   1276

AdventOfCode/Solutions/sol-2023/src/day5.rs

@@ -108,7 +108,7 @@ fn solve((seed_start, range_length): &(u32, u32), lookup: &Vec<Vec<(u32, u32, u3
 mod tests {
     use super::{input_generator, part1, part2};
 
-   // #[test]
+    #[test]
     fn basics() {
         let input = "seeds: 79 14 55 13
 

AdventOfCode/Solutions/sol-2023/src/day6.rs

@@ -0,0 +1,53 @@
+#[aoc_generator(day6)]
+pub fn input_generator(input: &str) -> Vec<(u64, u64)> {
+    let sections: Vec<_> = input.split("\n").collect();
+    return sections[0]
+        .strip_prefix("Time:")
+        .unwrap()
+        .split_whitespace()
+        .map(|n| n.trim().parse::<u64>().unwrap())
+        .zip(sections[1]
+            .strip_prefix("Distance:")
+            .unwrap()
+            .split_whitespace()
+            .map(|n| n.trim().parse::<u64>().unwrap()))
+        .collect::<Vec<_>>();
+}
+
+#[aoc(day6, part1)]
+pub fn part1(game: &Vec<(u64, u64)>) -> u64 {
+    return game
+        .iter()
+        .map(|(time, distance)| get_winning_options(*time, *distance))
+        .fold(1, |acc, n| acc * n);
+}
+
+#[aoc(day6, part2)]
+pub fn part2(_game: &Vec<(u64, u64)>) -> u64 {
+    let time :u64 = 59707878;
+    let distance :u64= 430121812131276;
+
+    return get_winning_options(time, distance);
+}
+
+fn get_winning_options(time: u64, distance: u64) -> u64 {
+    let mut total_winners = 0;
+    for i in 0..= time {
+        if i * (time - i) > distance {
+            total_winners += 1;
+        }
+    }
+    return total_winners;
+}
+
+#[cfg(test)]
+mod tests {
+    use super::{input_generator, part1};
+
+    #[test]
+    fn basics() {
+        let input = "Time:      7  15   30
+Distance:  9  40  200";
+        assert_eq!(part1(&input_generator(input)), 288);
+    }
+}

AdventOfCode/Solutions/sol-2023/src/lib.rs

@@ -8,5 +8,6 @@ pub mod day2;
 pub mod day3;
 pub mod day4;
 pub mod day5;
+pub mod day6;
 
 aoc_lib! { year = 2023 }