# Solved: representation of multidimensional array in data structure

The main problem with representing multidimensional arrays in data structures is that the data structure will not be able to efficiently access the elements in the array.

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A multidimensional array is an array of arrays, or an array whose elements are themselves arrays.

The simplest way to represent a multidimensional array in a data structure is to use a list of lists. For example, the following code creates a two-dimensional array with three rows and four columns:

array = [[0 for i in range(4)] for j in range(3)]

This approach has the advantage of being very simple and easy to understand. However, it is not very efficient, since each element in the array is actually a reference to another list.

A more efficient way to represent a multidimensional array is to use a single list, but store the indices of the elements in each row separately. For example, the following code creates a two-dimensional array with three rows and four columns:

array =  * 12 # create a list with 12 elements indices = [0, 4, 8] # create a list of indices for each row for i in range(3): # loop through each row for j in range(4): # loop through each column in the row array[indices[i] + j] = i * 4 + j # set the element at the index to be the value print(array)```

This approach is more efficient because it only uses a single list, and the indices of the elements in each row are stored separately.

## Multidimensional arrays

A multidimensional array is an array that can store multiple values in the same space. In Python, a multidimensional array is created by using the keyword list. The following code example creates a two-dimensional array named myArray:

myArray = [1, 2]

The first dimension of myArray is 1 and the second dimension is 2.

## Data structure

In Python, data structure refers to the way in which data is organized. There are several different types of data structures that can be used in Python, including lists, dictionaries, sets, and trees.

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