Multidimensional Arrays vs. Arrays of Arrays in C#: Which Should I Choose for Optimal Performance?

C# multi -dimensional array and array array: performance and grammar comparison

C# offers two ways to indicate multi -dimensional data structures: multidimensional array (for example,

) and array array (also known as a sawtooth somatoscopy, for example,

). double[,] double[][] Performance differences

The array of arrays is usually faster than the multi -dimensional array, mainly because the elements of the jagged array are only required for a single IL instruction (). In contrast, the elements of access to multi -dimensional array need to call (

), which will generate additional overhead.

stelem.i4 Grammar comparison call

The grammar of the multidimensional array is more concise and more intuitive. For example:

and the array array of jaggedness needs to be initialized separately for each sub -array:

<code class="language-csharp">double[,] multiDim = new double[3, 4];
double[][] jagged = new double[3][];</code>

The best application scenario

<code class="language-csharp">jagged[0] = new double[2];
jagged[1] = new double[5];
jagged[2] = new double[3];</code>

Multi -dimensional array:

It is suitable for arrays with fixed dimensions and regular structures.

In the case of array dimension is important and type safety is essential, using multidimensional arrays may be safer.

The array of the array:
It is suitable for scenes where the number of dimensions or size may change.

Performance is better than multidimensional arrays. Provide greater flexibility for operations such as row exchange and row adjustment.

• Example
The following examples illustrate the performance differences between multidimensional arrays and arrays:

Conclusion

The selection of Multi -dimensional array and array array should be based on the specific needs of the application and consider performance, grammar, and flexibility.

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