16 lines
323 B
Plaintext
16 lines
323 B
Plaintext
fn sum(arr: &[f64]) -> f64 {
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arr.iter().fold(0.0, |p,&q| p + q)
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}
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fn mean(arr: &[f64]) -> f64 {
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sum(arr) / arr.len() as f64
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}
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fn main() {
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let v = &[2.0, 3.0, 5.0, 7.0, 13.0, 21.0, 33.0, 54.0];
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println!("mean of {:?}: {:?}", v, mean(v));
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let w = &[];
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println!("mean of {:?}: {:?}", w, mean(w));
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}
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