12 lines
239 B
Rust
12 lines
239 B
Rust
use std::f32;
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fn harmonic_sum<F>(lo: usize, hi: usize, term: F) -> f32
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where
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F: Fn(f32) -> f32,
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{
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(lo..hi + 1).fold(0.0, |acc, item| acc + term(item as f32))
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}
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fn main() {
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println!("{}", harmonic_sum(1, 100, |i| 1.0 / i));
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}
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