buldak 0.28.1

It is a library that provides various sorting functions.
Documentation 
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//! sleep sort algorithm.
//!
//! unstable sort  
//! **O(N)**

/// Sort in ascending order using a sleep sort algorithm.
///
/// ```rust
/// use buldak::sleep;
///
/// let mut nums = [6, 4, 2, 3, 1, 5];
/// sleep::sort(&mut nums);
/// assert_eq!(nums, [1, 2, 3, 4, 5, 6]);
/// ```
pub fn sort<T>(array: &mut [T]) -> Result<(), String>
where
    T: std::convert::TryInto<usize>
        + std::convert::TryFrom<usize>
        + std::clone::Clone
        + std::marker::Sync
        + std::marker::Send
        + 'static,
    <T as std::convert::TryInto<usize>>::Error: std::fmt::Debug,
    <T as std::convert::TryFrom<usize>>::Error: std::fmt::Debug,
{
    _sleep_sort_impl(array, true)
}

/// Sort in descending order using a sleep algorithm.
///
/// ```rust
/// use buldak::sleep;
///
/// let mut nums = [6, 4, 2, 3, 1, 5];
/// sleep::sort_reverse(&mut nums);
/// assert_eq!(nums, [6, 5, 4, 3, 2, 1]);
/// ```
pub fn sort_reverse<T>(array: &mut [T]) -> Result<(), String>
where
    T: std::convert::TryInto<usize>
        + std::convert::TryFrom<usize>
        + std::clone::Clone
        + std::marker::Sync
        + std::marker::Send
        + 'static,
    <T as std::convert::TryInto<usize>>::Error: std::fmt::Debug,
    <T as std::convert::TryFrom<usize>>::Error: std::fmt::Debug,
{
    _sleep_sort_impl(array, false)
}

fn _sleep_sort_impl<T>(array: &mut [T], asc: bool) -> Result<(), String>
where
    T: std::convert::TryInto<usize>
        + std::convert::TryFrom<usize>
        + std::clone::Clone
        + std::marker::Sync
        + std::marker::Send
        + 'static,
    <T as std::convert::TryInto<usize>>::Error: std::fmt::Debug,
    <T as std::convert::TryFrom<usize>>::Error: std::fmt::Debug,
{
    use std::sync::{Arc, Mutex};
    use std::{thread, time};

    let original = Arc::new(Mutex::new(array.to_owned()));

    let shared = Arc::new(Mutex::new(vec![]));
    let mut handlers = vec![];

    for e in original.lock().unwrap().iter().cloned() {
        let data = Arc::clone(&shared);

        let n: usize = e.to_owned().try_into().unwrap();

        handlers.push(thread::spawn(move || {
            thread::sleep(time::Duration::from_secs(n as u64));
            data.lock().unwrap().push(e);
        }));
    }

    for handler in handlers {
        handler.join().unwrap();
    }

    let result = shared.lock().unwrap();

    if asc {
        for i in 0..array.len() {
            array[i] = result[i].clone();
        }
    } else {
        let len = array.len();
        for i in 0..array.len() {
            array[i] = result[len - i - 1].clone();
        }
    }

    return Ok(());
}

mod tests {
    #[test]
    fn sort_ascending() {
        struct TestCase {
            input: Vec<i32>,
            expected: Vec<i32>,
        }

        let test_cases = vec![TestCase {
            input: vec![1, 4, 2, 3, 5, 111, 234, 21, 13],
            expected: vec![1, 2, 3, 4, 5, 13, 21, 111, 234],
        }];

        for case in test_cases {
            let mut actual = case.input.clone();
            super::sort(&mut actual).unwrap();
            assert_eq!(actual, case.expected);
        }
    }

    #[test]
    fn sort_descending() {
        struct TestCase {
            input: Vec<i32>,
            expected: Vec<i32>,
        }

        let test_cases = vec![TestCase {
            input: vec![1, 4, 2, 3, 5, 111, 234, 21, 13],
            expected: vec![234, 111, 21, 13, 5, 4, 3, 2, 1],
        }];

        for case in test_cases {
            let mut actual = case.input.clone();
            super::sort_reverse(&mut actual).unwrap();
            assert_eq!(actual, case.expected);
        }
    }
}