> For the complete documentation index, see [llms.txt](https://educacion.gitbook.io/programacion/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://educacion.gitbook.io/programacion/ud2-programacion-estructurada/arrays/operacions.md).

# Operacións

As principais operacións que se poden realizar con un Array son as seguintes, partindo do seguinte exemplo:

```java
double notas[] = new double[10];
```

1. **Acceso a un valor:** O acceso a un valor faise de maneira individual utilizando o índice que corresponda

```java
/* O acceso a notas faise mediante notas[indice], e permitenos recuperar
 o valor para asignalo a outra variable */
double variable = notas[3];
//Podese tamen imprimir o valor por pantalla
System.out.println(notas[3]);
```

2. **Asignación de un valor:** Asignación de valores faise de maneira individual utilizando o índice para acceder a posición de memoria correspondente na que se asigna o valor deseado.

```java
notas[3] = 7.5;
```

3. **Obter o tamaño de un array:** O tamaño podese coñecer mediante a propiedade length do obxecto array

```java
int tam = notas.length;
```

4. **Recorrer un array:** Para recorrer un array, o mais comun e utilizar un bucle. Por exemplo se quixésemos mostrar por pantalla os valores do Array notas:

```java
for(int i = 0; i < notas.lenght; i++ ){
    System.out.println(notas[i]);
}
```


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