Vectors데이터 저장

link

• 벡터 만들기

• 벡터에 데이터 추가하기

• 벡터 데이터 읽기

• matrix구현

  • 2차원 매트릭스(2d matrix)
  • 3차원 매트릭스(3d matrix)

벡터 만들기|🔝|

#![allow(unused)]
fn main() {
let my_vector : Vec<i32> = Vec::new();

// or

let my_vector_macro = vec![];

}

벡터에 데이터 추가하기|🔝|

#![allow(unused)]
fn main() {
let mut my_vector = Vec::new();

my_vector.push(10);
my_vector.push(11);
my_vector.push(12);
my_vector.push(13);
my_vector.push(14);
}

벡터 데이터 읽기|🔝|

#![allow(unused)]
fn main() {
let my_vector = vec![1, 2, 3, 4, 5];

let read_my_vector02 = my_vector[1];

assert_eq![2, read_my_vector02];
}

Matrix로 다차원 구조 만들기|🔝|

2차원 매트릭스(2d matrix)|🔝|

fn main() {
    // 딱딱한 array버젼 변형하기 쉽지 않다.
    let mut state = [[0u8; 4]; 6];
    state[0][1] = 42;
    println!("two dimention : ");
    for matrix_2d in state {
        println!("{matrix_2d:?}");
    }

    // Vector를 활용해서 다양한 데이터를 유연하게 받기 위해 만듬
    println!("\nvector style (two dimention) : ");    
    let mut vector_state = vec![vec![0;4];4];
    vector_state[1][0] = 99;
    for matrix_2d in vector_state {
        println!("{matrix_2d:?}");
    }
} 

• Result

two dimention : 
[0, 42, 0, 0]
[0, 0, 0, 0]
[0, 0, 0, 0]
[0, 0, 0, 0]
[0, 0, 0, 0]
[0, 0, 0, 0]

vector style (two dimention) : 
[0, 0, 0, 0]
[99, 0, 0, 0]
[0, 0, 0, 0]
[0, 0, 0, 0]

3차원 매트릭스(3d matrix)|🔝|

fn main() {
    let mut state = [[[0u8; 4]; 6];3];
    state[0][1][1] = 42;
    println!("3d dimention : ");
    for matrix_3d in state {
        for matrix_2d in matrix_3d {
        println!("{matrix_2d:?}");    
        }
        println!("~~~dimention line~~~");    
    }

    println!("\n\n~~~\nvector style (3d dimention) : ");    
    let mut vector_state = vec![vec![vec![0;4];6];3];
    vector_state[1][0][0] = 99;
    for matrix_3d in vector_state {
        for matrix_2d in matrix_3d {
        println!("{matrix_2d:?}");    
        }
        println!("~~~dimention line~~~");    
    }
}

• result

3d dimention : 
[0, 0, 0, 0]
[0, 42, 0, 0]
[0, 0, 0, 0]
[0, 0, 0, 0]
[0, 0, 0, 0]
[0, 0, 0, 0]
~~~dimention line~~~
[0, 0, 0, 0]
[0, 0, 0, 0]
[0, 0, 0, 0]
[0, 0, 0, 0]
[0, 0, 0, 0]
[0, 0, 0, 0]
~~~dimention line~~~
[0, 0, 0, 0]
[0, 0, 0, 0]
[0, 0, 0, 0]
[0, 0, 0, 0]
[0, 0, 0, 0]
[0, 0, 0, 0]
~~~dimention line~~~


~~~
vector style (3d dimention) : 
[0, 0, 0, 0]
[0, 0, 0, 0]
[0, 0, 0, 0]
[0, 0, 0, 0]
[0, 0, 0, 0]
[0, 0, 0, 0]
~~~dimention line~~~
[99, 0, 0, 0]
[0, 0, 0, 0]
[0, 0, 0, 0]
[0, 0, 0, 0]
[0, 0, 0, 0]
[0, 0, 0, 0]
~~~dimention line~~~
[0, 0, 0, 0]
[0, 0, 0, 0]
[0, 0, 0, 0]
[0, 0, 0, 0]
[0, 0, 0, 0]
[0, 0, 0, 0]
~~~dimention line~~~