Indexing Rectangular Multi-Dimensional Arrays

Snippet

Indexing Rectangular Multi-Dimensional Arrays

Rectangular arrays (int[,]) have a fixed size for each dimension, unlike jagged arrays. Accessing elements uses a comma-separated syntax, and GetLength is used to determine the bounds of each dimension safely.

snippet.cs

csharp

int[,] map = new int[3, 2] 
{
    { 1, 2 }, 
    { 3, 4 }, 
    { 5, 6 } 
};
 
for (int i = 0; i < map.GetLength(0); i++)
{
    for (int j = 0; j < map.GetLength(1); j++)
    {
        Console.Write(map[i, j] + " ");
    }
}

Breakdown

int[,] map = new int[3, 2]

Declares a 2D rectangular array with 3 rows and 2 columns.

map.GetLength(0)

Retrieves the size of the first dimension (rows).

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Indexing Rectangular Multi-Dimensional Arrays

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