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並前往https://users.rust-lang.org/t/how-to-randomly-take-out-an-element-and-delete-it-from-vec/51986

How to randomly take out an element and delete it from Vec

use rand::prelude::*; fn main() { let mut raw = vec![1, 2, 2, 3, 3, 3, 4]; let out = choose(raw) } fn choose(raw: &mut [u8]) -> u8{ let out ...

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