Selection Sort in Rust

Welcome to the Selection 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

use std::env::args;
use std::process::exit;
use std::str::FromStr;

fn usage() -> ! {
    println!("Usage: please provide a list of at least two integers to sort in the format \"1, 2, 3, 4, 5\"");
    exit(0);
}

fn parse_int<T: FromStr>(s: &str) -> Result<T, <T as FromStr>::Err> {
    s.trim().parse::<T>()
}

fn parse_int_list<T: FromStr>(s: &str) -> Result<Vec<T>, <T as FromStr>::Err> {
    s.split(',')
        .map(parse_int)
        .collect::<Result<Vec<T>, <T as FromStr>::Err>>()
}

fn selection_sort<T: PartialOrd>(arr: &mut Vec<T>) {
    // Source: https://en.wikipedia.org/wiki/Selection_sort#Implementations
    for i in 0..(arr.len() - 1) {
        let mut min_pos = i;
        for j in (i + 1)..arr.len() {
            if arr[j] < arr[min_pos] {
                min_pos = j;
            }
        }

        if min_pos != i {
            arr.swap(min_pos, i);
        }
    }
}

fn main() {
    let mut args = args().skip(1);

    // Convert 1st command-line argument to list of integers
    let mut arr: Vec<i32> = args
        .next()
        .and_then(|s| parse_int_list(&s).ok())
        .unwrap_or_else(|| usage());

    // Exit if list too small
    if arr.len() < 2 {
        usage();
    }

    selection_sort::<i32>(&mut arr);
    println!("{arr:?}");
}

Selection Sort in Rust was written by:

• rzuckerm

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

Note: The solution shown above is the current solution in the Sample Programs repository as of May 08 2023 19:53:07. The solution was first committed on Apr 06 2023 09:46:06. As a result, documentation below may be outdated.

How to Implement the Solution

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

How to Run the Solution

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