Traversing Multi-dimensional Rectangular Arrays

Snippet

Traversing Multi-dimensional Rectangular Arrays

Unlike jagged arrays (arrays of arrays), rectangular arrays have a fixed shape defined by commas in the square brackets. The GetLength method is used to find the bounds of specific dimensions.

snippet.cs

csharp

public class MatrixProcessor {
    public void ProcessMatrix() {
        int[,] matrix = new int[2, 3] {
            { 1, 2, 3 },
            { 4, 5, 6 }
        };
 
        for (int i = 0; i < matrix.GetLength(0); i++) {
            for (int j = 0; j < matrix.GetLength(1); j++) {
                System.Console.WriteLine($"Element at [{i},{j}]: {matrix[i, j]}");
            }
        }
    }
}

Breakdown

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

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

matrix.GetLength(0)

Retrieves the size of the first dimension (rows).

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Traversing Multi-dimensional Rectangular Arrays

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