2023 - Day 5 : v2

2023/day5/src/main.rs

@@ -135,17 +135,25 @@ fn puzzle2(seeds: Vec<usize>, maps: HashMap<String, Map>) {
     let mut s: Vec<usize> = vec![];
     let map = maps.get("seed").unwrap();
 
-    for i in seeds.chunks(2) {
-        let range = std::ops::Range {
+    let ranges: Vec<_> = seeds
+        .chunks(2)
+        .map(|i| std::ops::Range {
             start: i[0],
             end: i[0] + i[1],
-        };
-        for r in range {
-            s.push(check_range(r, map, &maps));
-        }
-    }
+        })
+        .collect();
 
-    let min = s.iter().min().unwrap();
+    let min: Vec<_> = ranges
+        .iter()
+        .map(|range| {
+            range.clone()
+                .map(|r| check_range(r, map, &maps))
+                .min()
+                .unwrap()
+        })
+        .collect::<Vec<_>>();
+
+    let min = min.iter().min().unwrap();
     println!("Puzzle 2 : {:?}", min);
 }