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21 lines
412 B
Rust
21 lines
412 B
Rust
use rand::Rng;
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use std::collections::VecDeque;
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pub trait Shuffle {
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fn shuffle(&mut self);
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}
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impl<T> Shuffle for VecDeque<T> {
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/// Fisher-Yates shuffle implementation
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/// for VecDeque.
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fn shuffle(&mut self) {
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let mut rng = rand::thread_rng();
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let mut i = self.len();
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while i >= 2 {
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i -= 1;
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self.swap(i, rng.gen_range(0..i + 1))
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}
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}
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}
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