[RUST/COMMON] Vec<T> 구조체 : shuffle 메소드 사용하기

■ Vec<T> 구조체의 shuffle 메소드를 사용하는 방법을 보여준다.

 

▶ Cargo.toml

[package]
name = "test_project"
version = "0.1.0"
edition = "2021"

# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

[dependencies]
rand = "0.8.0"

 

▶ main.rs

use rand::seq::SliceRandom;

fn main()
{
    let mut number_vector = vec![];

    for i in 1..=75
    {
        number_vector.push(i);
    }

    let mut random_number_generator = rand::thread_rng();

    number_vector.shuffle(&mut random_number_generator);

    for i in 0..25
    {
        if i == 12
        {
            print!("  *,");
        }
        else
        {
            print!("{:3},", number_vector[i]);
        }

        if i % 5 == 4
        {
            println!("");
        }
    }
}