rust从一行中读取数组

use std::io;

fn main() {
    let mut input = String::new();
    io::stdin().read_line(&mut input).unwrap();
    let ns: Vec<i32> = input.trim().split(' ').map(|x| x.parse().unwrap()).collect();
    for v in ns {
        print!("{} ", v);
    }
}