Quick Sort in Rust

Welcome to the Quick Sort in Rust page! Here, you'll find the source code for this program as well as a description of how the program works.

Current Solution

fn quicksort_recursive<T: std::cmp::PartialOrd + Clone>(mut vector: Vec<T>) -> Vec<T> {
    match vector.len() {
        0|1 => vector,
        _ => {
            let pivot = vector.pop().unwrap(); // len is always greater than 1 here, so this is safe
            let lesser: Vec<T> = vector.iter().cloned().filter(|i| i.lt(&pivot)).collect();
            let greater: Vec<T> = vector.into_iter().filter(|i| i.ge(&pivot)).collect();
            let mut lesser = quicksort_recursive(lesser);
            lesser.push(pivot);
            lesser.extend(quicksort_recursive(greater).into_iter());
            lesser
        },
    }
}


fn main() {
    let usage_msg = "Usage: please provide a list of at least two integers to sort in the format \"1, 2, 3, 4, 5\"";

    let mut args = std::env::args();
    args.next(); // first arg is command name, so ignore it

    let input_str = args.next().unwrap_or_else(|| {eprintln!("{usage_msg}"); std::process::exit(-1)});
    let input_vec: Vec<i32> = input_str.split(",") // parse comma separated input into a i32 vector
        .map(|x| x.trim()
            .parse()
            .unwrap_or_else(|_| {eprintln!("{usage_msg}"); std::process::exit(-1)}))
        .collect();

    if input_vec.len() < 2 {
        eprintln!("{usage_msg}");
        std::process::exit(-1);
    }

    println!("{:?}", quicksort_recursive(input_vec));
}

Quick Sort in Rust was written by:

• Paolo Cretaro

If you see anything you'd like to change or update, please consider contributing.

How to Implement the Solution

No 'How to Implement the Solution' section available. Please consider contributing.

How to Run the Solution

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