What are the differences between jagged and rectangular arrays?

Can you explain the differences between jagged and rectangular arrays?

Sure! Jagged arrays are arrays of arrays, where each 'inner' array can have different lengths. Rectangular arrays, on the other hand, have a fixed number of rows and columns, making them uniform in size.

What are some use cases for jagged arrays?

Jagged arrays are useful when you need to store data that doesn't fit into a uniform structure, like a list of students with varying numbers of grades.

Are there any performance differences between the two?

Yes, jagged arrays can be more memory efficient for non-uniform data, but accessing elements might be slower due to the additional level of indirection.

Can you give an example of how to declare both types in code?

Certainly! In C#, a jagged array is declared like this: int[][] jaggedArray = new int[3][]; and a rectangular array like this: int[,] rectangularArray = new int[3,4];.