13 lines
244 B
Text
13 lines
244 B
Text
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use std::mem;
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fn main() {
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fibonacci(0,1);
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}
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fn fibonacci(mut prev: usize, mut curr: usize) {
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mem::swap(&mut prev, &mut curr);
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if let Some(n) = curr.checked_add(prev) {
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println!("{}", n);
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fibonacci(prev, n);
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}
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}
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