A one liner to find factors of a number in Rust.

factors.rs

use std::io;

fn main() {
    println!("Enter a number to find its factors: ");
    let mut s = String::new();
    io::stdin()
        .read_line(&mut s)
        .expect("failed to read line");
    let num: u64 = s.trim().parse().expect("Enter in a positive integer only");
    let factors = get_factors_functional(num);
    println!("{:?}", factors);
}

fn get_factors_functional(n: u64) -> Vec<u64> {
    (1..n + 1).into_iter().filter(|&x| n % x == 0).collect::<Vec<u64>>()
}