[2016][rust][3.1]

2016/rust/src/day_03.rs

@@ -1,12 +1,21 @@
 pub fn solve(input: &str) -> String {
-  let parsed = input.split_whitespace()
-    .map(str::parse)
-    .collect::<Result<Vec<usize>, _>>()
-    .expect("unable to parse input");
+  let parsed = input.lines()
+    .map(|line| {
+      line.split_whitespace().map(str::parse).collect::<Result<Vec<usize>, _>>()
+    })
+    .collect::<Result<Vec<_>, _>>()
+    .expect("couldn't parse input");
   let count = parsed.chunks(3)
-    .map(|w| Triangle(w[0], w[1], w[2]))
+    .flat_map(|chunk| {
+      vec![
+      Triangle(chunk[0][0], chunk[1][0], chunk[2][0]),
+      Triangle(chunk[0][1], chunk[1][1], chunk[2][1]),
+      Triangle(chunk[0][2], chunk[1][2], chunk[2][2]),
+    ]
+    })
     .filter(Triangle::is_valid)
     .count();
+
   count.to_string()
 }