rust/high-scores/src/lib.rs


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#[derive(Debug)]
pub struct HighScores<'a> {
    scores: &'a [u32]
}

impl<'a> HighScores<'a> {
    pub fn new(scores: &'a [u32]) -> Self {
        HighScores{ scores }
    }

    pub fn scores(&self) -> &[u32] {
        self.scores
    }

    pub fn latest(&self) -> Option<u32> {
        self.scores.last().copied()
    }

    pub fn personal_best(&self) -> Option<u32> {
        self.scores.iter().max().copied()
    }

    pub fn personal_top_three(&self) -> Vec<u32> {
        let mut top3 = self.scores.to_vec();
        top3.sort_unstable_by(|a,b| b.cmp(a));
        top3.truncate(3);
        top3
    }
}