Data structures are a way of organizing and storing data in a computer
so that they can be accessed and worked with efficiently. They are
essential to programming and are used to solve complex problems. In
this chapter, we will learn about two main types of data structures:
linear and nonlinear.
Linear Data Structures
A linear data structure is a type of data structure where the elements
are arranged in a linear sequence, and each element has a next and
previous element, except for the first and last elements. The most
common examples of linear data structures are arrays, linked lists,
and stacks.
Arrays
An array is a collection of elements of the same type stored in
contiguous memory locations. Each element can be accessed using
an index. For example, if we have an array of integers, we can access
the first element by using the index 0, the second element by using
the index 1, and so on. Here's an example in Python:
# Creating an array of integers
numbers = [1, 2, 3, 4, 5]
# Accessing the first element
print(numbers[0]) # Output: 1
# Accessing the third element
print(numbers[2]) # Output: 3
Linked Lists
A linked list is a linear data structure where each element is a
separate object, and each element (or node) contains a reference to
the next node in the sequence. The last node in the sequence has a
so that they can be accessed and worked with efficiently. They are
essential to programming and are used to solve complex problems. In
this chapter, we will learn about two main types of data structures:
linear and nonlinear.
Linear Data Structures
A linear data structure is a type of data structure where the elements
are arranged in a linear sequence, and each element has a next and
previous element, except for the first and last elements. The most
common examples of linear data structures are arrays, linked lists,
and stacks.
Arrays
An array is a collection of elements of the same type stored in
contiguous memory locations. Each element can be accessed using
an index. For example, if we have an array of integers, we can access
the first element by using the index 0, the second element by using
the index 1, and so on. Here's an example in Python:
# Creating an array of integers
numbers = [1, 2, 3, 4, 5]
# Accessing the first element
print(numbers[0]) # Output: 1
# Accessing the third element
print(numbers[2]) # Output: 3
Linked Lists
A linked list is a linear data structure where each element is a
separate object, and each element (or node) contains a reference to
the next node in the sequence. The last node in the sequence has a
