题解 | 牛牛的字符菱形

use std::io::{self, *};

fn main() {
    let stdin = io::stdin();
    let mut input = String::new();
    stdin.read_line(&mut input).unwrap();
    let nums:[usize;5] = [2, 1, 0, 1, 2];
    for i in  &nums{
        println!(
            "{}{}",
            String::from(" ").repeat(*i),
            input.trim().repeat(5 - *i * 2)
        );
    }
}