58 lines
1.1 KiB
Markdown
58 lines
1.1 KiB
Markdown
## Simple array (1 dimension)
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An array is a vector in a collection
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To declare an array we use :
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```csharp
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public static void Main() {
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int[] vect = new int[4] // Declare a vector of 4 elements (from 0 to 3)
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vect[3] = 22;
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Console.WriteLine($"b = {b}");
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Console.WriteLine($"{vect[3]}");
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}
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```
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The result will be:
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```bash
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b = 0
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22
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```
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We see that an array start from $0$ to $n-1$
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## Complex array (x dimension)
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To create a vect with multiple dimension, we just have to declare an array and add a brackets to define multiple dimension
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```csharp
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// First version
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public static void Main() {
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int[,] mat = new int[12, 9] // Declare an array of two dimensions mat with default value for [0]
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mat[3, 4] = 12;
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}
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// Second version
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public static void Main() {
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int[,] mat = {
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{ 2, 3 },
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{ 4, 5 }
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};
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int a = mat[1, 0];
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}
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```
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To display a matrice we will use:
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```csharp
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public static void Main() {
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int[,] mat = {
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{ 2, 3 },
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{ 4, 5 }
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};
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int a = mat[1, 0];
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for (int x = 0; x < math.GetLenght(...); x++) {
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for (int y = 0; y < math.GetLenght(...); y++) {
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Console.WriteLine(mat[x, y])
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}
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}
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}
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```
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