RAND Archives - icodebroker

[RUST/RAND] ThreadRng 구조체 : gen_range 메소드를 사용해 숫자 맞추기 게임 만들기

■ ThreadRng 구조체의 gen_range 메소드를 사용해 임의의 난수를 생성하고 숫자를 맞추는 게임을 만드는 방법을 보여준다. ▶ Cargo.toml


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

[dependencies]
rand = "0.8.0"

[package]

name = "test_project"

version = "0.1.0"

edition = "2021"

[dependencies]

rand = "0.8.0"

▶ src/main.rs


use std::cmp;
use std::io;

use rand;
use rand::rngs;
use rand::Rng;

fn main()
{
    println!("Guess the number!");

    let mut thread_rng: rngs::ThreadRng = rand::thread_rng();

    let secret_number : u32 = thread_rng.gen_range(1..=100);

    loop
    {
        println!("Please input your guess.");

        let mut guess_string : String = String::new();

        io::stdin().read_line(&mut guess_string).expect("Failed to read line");

        let guess_number : u32 = match guess_string.trim().parse()
        {
            Ok(number) => number,
            Err(_)          => continue
        };

        println!("You guessed : {}", guess_number);

        match guess_number.cmp(&secret_number)
        {
            cmp::Ordering::Less    => println!("Too small!"),
            cmp::Ordering::Greater => println!("Too big!"),
            cmp::Ordering::Equal   =>
            {
                println!("You win!");

                break;
            }
        }
    }
}

use std::cmp;

use std::io;

use rand;

use rand::rngs;

use rand::Rng;

fn main()

{

println!("Guess the number!");

let mut thread_rng: rngs::ThreadRng = rand::thread_rng();

let secret_number : u32 = thread_rng.gen_range(1..=100);

loop

{

println!("Please input your guess.");

let mut guess_string : String = String::new();

io::stdin().read_line(&mut guess_string).expect("Failed to read line");

let guess_number : u32 = match guess_string.trim().parse()

{

Ok(number) => number,

Err(_) => continue

};

println!("You guessed : {}", guess_number);

match guess_number.cmp(&secret_number)

{

cmp::Ordering::Less => println!("Too small!"),

cmp::Ordering::Greater => println!("Too big!"),

cmp::Ordering::Equal =>

{

println!("You win!");

break;

}

test_project.zip

[RUST/RAND] ThreadRng 구조체 : gen_range 메소드를 사용해 임의의 난수 구하기

■ ThreadRng 구조체의 gen_range 메소드를 사용해 임의의 난수를 구하는 방법을 보여준다. ▶ 예제 코드 (RS)


use rand::rngs;
use rand::Rng;

let mut thread_rng : rngs::ThreadRng = rand::thread_rng();

let secret_number : u32 = thread_rng.gen_range(1..=100);

use rand::rngs;

use rand::Rng;

let mut thread_rng : rngs::ThreadRng = rand::thread_rng();

let secret_number : u32 = thread_rng.gen_range(1..=100);

[RUST/RAND] 미로 자동 생성하기

■ 미로를 자동으로 생성하는 방법을 보여준다. ▶ main.rs


use rand::Rng;

const CELL_COUNT : usize = 25;

fn main()
{
    let mut random_number_generator = rand::thread_rng();

    let mut maze_array = [[0; CELL_COUNT]; CELL_COUNT];

    for n in 0..CELL_COUNT
    {
        maze_array[n             ][0           ] = 1; // 위쪽 벽
        maze_array[0             ][n           ] = 1; // 왼쪽 벽
        maze_array[n             ][CELL_COUNT-1] = 1; // 오른쪽 벽
        maze_array[CELL_COUNT - 1][n           ] = 1; // 아래쪽 벽
    }

    for y in 2..CELL_COUNT - 2
    {
        for x in 2..CELL_COUNT - 2
        {
            if x % 2 == 1 || y % 2 == 1
            {
                continue;
            }

            maze_array[y][x] = 1; // 벽

            let random_number = random_number_generator.gen_range(0..=3);

            match random_number
            {
                0 => maze_array[y - 1][x    ] = 1, // 상
                1 => maze_array[y + 1][x    ] = 1, // 하
                2 => maze_array[y    ][x - 1] = 1, // 좌
                3 => maze_array[y    ][x + 1] = 1, // 우
                _ => {},
            }
        }
    }

    let tile_array = ["  ", "##"];

    for y in 0..CELL_COUNT
    {
        for x in 0..CELL_COUNT
        {
            print!("{}", tile_array[maze_array[y][x]]);
        }

        println!("");
    }
}

use rand::Rng;

const CELL_COUNT : usize = 25;

fn main()

{

let mut random_number_generator = rand::thread_rng();

let mut maze_array = [[0; CELL_COUNT]; CELL_COUNT];

for n in 0..CELL_COUNT

{

maze_array[n ][0 ] = 1; // 위쪽 벽

maze_array[0 ][n ] = 1; // 왼쪽 벽

maze_array[n ][CELL_COUNT-1] = 1; // 오른쪽 벽

maze_array[CELL_COUNT - 1][n ] = 1; // 아래쪽 벽

}

for y in 2..CELL_COUNT - 2

{

for x in 2..CELL_COUNT - 2

{

if x % 2 == 1 || y % 2 == 1

{

continue;

}

maze_array[y][x] = 1; // 벽

let random_number = random_number_generator.gen_range(0..=3);

match random_number

{

0 => maze_array[y - 1][x ] = 1, // 상

1 => maze_array[y + 1][x ] = 1, // 하

2 => maze_array[y ][x - 1] = 1, // 좌

3 => maze_array[y ][x + 1] = 1, // 우

_ => {},

}

let tile_array = [" ", "##"];

for y in 0..CELL_COUNT

{

for x in 0..CELL_COUNT

{

print!("{}", tile_array[maze_array[y][x]]);

}

println!("");

}

test_project.zip

[RUST/RAND] rand 크레이트를 사용해 난수 생성하기

■ rand 크레이트를 사용해 난수를 생성하는 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"

[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::Rng;

fn main()
{
    let mut random = rand::thread_rng();

    for _ in 0..5
    {
        let random_value = random.gen_range(1..=6);

        println!("{}", random_value);
    }
}

use rand::Rng;

fn main()

{

let mut random = rand::thread_rng();

for _ in 0..5

{

let random_value = random.gen_range(1..=6);

println!("{}", random_value);

}

test_project.zip