🐍 Arrays In Python - Definition, Example, Syntax and Types 🐍

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Arrays in Python allow you to store multiple values in a single variable. Learn how to create arrays using lists, the array module, and NumPy.

🐬What is an Array?

An array is a linear data structure that stores elements in contiguous memory locations.
Each element is accessed using an index, and all elements are of the same data type.

🐬Key Features:

• Fixed size (in most languages like C/C++)
• Index-based access (starts from 0)
• Efficient for reading elements
• Stored in continuous memory

🐬Types of Arrays:

• One-Dimensional Array: Simple list of elements
• Two-Dimensional Array: Like a matrix (rows & columns)
• Multi-Dimensional Array: 3D or more dimensions

🐬Array Syntax in Different Languages:

    🐢Python:

        arr = [10, 20, 30, 40]

        print(arr[2])  # Output: 30

    🐢C:

        int arr[4] = {10, 20, 30, 40};

        printf("%d", arr[2]); // Output: 30

    🐢C++:

        int arr[] = {10, 20, 30, 40};

        cout << arr[2]; // Output: 30

   🐢Java:

        int[] arr = {10, 20, 30, 40};

        System.out.println(arr[2]); // Output: 30

🐬Example Program (Python):

arr = [1, 2, 3, 4, 5]
 
    🐌# Insert
        arr.insert(2, 99)  # at index 2
                print(arr)  # [1, 2, 99, 3, 4, 5]
 
    🐌# Delete
         arr.remove(99)
                print(arr)  # [1, 2, 3, 4, 5]
 
    🐌# Search
                print(3 in arr)  # True
 
    🐌# Update
         arr[1] = 20
                print(arr)  # [1, 20, 3, 4, 5

🐬When to Use Arrays?

• When the size is known in advance.
• When you need fast access using index.
• For storing elements of same type.