feat(05/2025): solve first part

Author: manhunto

readme.md

@@ -15,7 +15,7 @@
 | [Day 2: Gift Shop](src/solutions/year2025/day02.rs)           |   ⭐⭐   |           65.103 |           81.719 |
 | [Day 3: Lobby](src/solutions/year2025/day03.rs)               |   ⭐⭐   |            0.131 |            0.133 |
 | [Day 4: Printing Department](src/solutions/year2025/day04.rs) |   ⭐⭐   |            3.615 |            9.998 |
-| [Day 5: Cafeteria](src/solutions/year2025/day05.rs)           |        |                - |                - |
+| [Day 5: Cafeteria](src/solutions/year2025/day05.rs)           |   ⭐    |            0.275 |                - |
 
 # 2024
 

src/solutions/year2025/day05.rs

@@ -1,26 +1,68 @@
 use crate::solutions::Solution;
+use itertools::Itertools;
+use std::ops::RangeInclusive;
 
 pub struct Day05;
 
 impl Solution for Day05 {
-    fn part_one(&self, _input: &str) -> String {
-        String::from("0")
+    fn part_one(&self, input: &str) -> String {
+        let (ranges, ids) = self.parse(input);
+
+        ids.iter()
+            .filter(|id| ranges.iter().any(|range| range.contains(id)))
+            .count()
+            .to_string()
     }
 
     fn part_two(&self, _input: &str) -> String {
         String::from("0")
     }
 }
 
+impl Day05 {
+    fn parse(&self, input: &str) -> (Vec<RangeInclusive<usize>>, Vec<usize>) {
+        let (ranges_str, ids_str) = input.split_once("\n\n").unwrap();
+
+        let ranges = ranges_str
+            .lines()
+            .map(|line| {
+                let (start, end) = line.split_once("-").unwrap();
+
+                let start = start.parse::<usize>().unwrap();
+                let end = end.parse::<usize>().unwrap();
+
+                start..=end
+            })
+            .collect_vec();
+
+        let ids = ids_str
+            .lines()
+            .map(|line| line.parse::<usize>().unwrap())
+            .collect_vec();
+
+        (ranges, ids)
+    }
+}
+
 #[cfg(test)]
 mod tests {
     use crate::solutions::year2025::day05::Day05;
     use crate::solutions::Solution;
 
-    const EXAMPLE: &str = r#""#;
+    const EXAMPLE: &str = r#"3-5
+10-14
+16-20
+12-18
+
+1
+5
+8
+11
+17
+32"#;
 
     #[test]
     fn part_one_example_test() {
-        assert_eq!("0", Day05.part_one(EXAMPLE));
+        assert_eq!("3", Day05.part_one(EXAMPLE));
     }
 }