What are jagged arrays and can you provide some examples?

What are jagged arrays and can you provide some examples?

Jagged arrays are arrays of arrays where each sub-array can have different lengths. For example, in Python, you can create a jagged array like this: jagged_array = [[1, 2, 3], [4, 5], [6]].

Can you show me a jagged array in Java?

Sure! In Java, a jagged array can be declared like this: int[][] jaggedArray = new int[3][]; jaggedArray[0] = new int[2]; jaggedArray[1] = new int[3]; jaggedArray[2] = new int[1];.

What are the advantages of using jagged arrays?

Jagged arrays are memory efficient as they allow you to allocate only as much memory as needed for each sub-array, which can save space.

Can you give me a real-world scenario where jagged arrays would be useful?

Certainly! Jagged arrays are useful in scenarios like storing data for a classroom where each student has a different number of grades.