Initial commit

high-scores/src/lib.rs

@@ -0,0 +1,31 @@
+#[derive(Debug)]
+pub struct HighScores<'a> {
+    scores: &'a [u32]
+}
+
+impl<'a> HighScores<'a> {
+    pub fn new(scores: &'a [u32]) -> Self {
+        Self {
+            scores
+        }
+    }
+
+    pub fn scores(&self) -> &[u32] {
+        self.scores
+    }
+
+    pub fn latest(&self) -> Option<u32> {
+        self.scores.last().cloned()
+    }
+
+    pub fn personal_best(&self) -> Option<u32> {
+        self.scores.iter().max().cloned()
+    }
+
+    pub fn personal_top_three(&self) -> Vec<u32> {
+        let mut top_vec = self.scores.to_vec();
+        top_vec.sort_unstable_by(|a, b| b.cmp(a));
+        top_vec.truncate(3);
+        top_vec
+    }
+}