Data Types

Data Types in Python

In Python, there are several built-in data types that are commonly used in competitive programming. These data types can be categorized into several groups:

Numeric Types

• int: Represents integer values. Example: x = 10
• float: Represents floating-point numbers. Example: y = 3.14
• complex: Represents complex numbers. Example: `z = 1 + 2j

Sequence Types

• list: An ordered, mutable collection of items. Example: my_list = [1, 2, 3]
• tuple: An ordered, immutable collection of items. Example: my_tuple = (1, 2, 3)
• range: Represents a sequence of numbers. Example: my_range = range(1, 10)
• str: Represents a sequence of characters. Example: my_string = "Hello"

Set Types

• set: An unordered collection of unique items. Example: my_set = {1, 2, 3}
• frozenset: An immutable version of a set. Example: my_frozenset = frozenset({1, 2, 3})

Mapping Types

• dict: Represents a collection of key-value pairs. Example: my_dict = {'key1': 'value1', 'key2': 'value2'}

Boolean Type

• bool: Represents a boolean value, which can be either True or False. Example: is_valid = True

None Type

• NoneType: Represents the absence of a value. Example: result = None

Other Types

• bytes: Represents a sequence of bytes. Example: my_bytes = b'Hello'
• bytearray: A mutable sequence of bytes. Example: my_bytearray = bytearray(b'Hello')
• memoryview: A memory view object that allows you to access the internal data of an object that supports the buffer protocol. Example: my_memoryview = memoryview(b'Hello')

Understanding these data types is crucial for effectively solving problems in competitive programming, as they allow you to store and manipulate data in various ways.

Assigning Data Types

You can assign values to variables of different data types in Python. Here are some examples:

Assigning Numeric Types

x = 10  # int
y = 3.14  # float
z = 1 + 2j  # complex

Assigning Sequence Types

my_list = [1, 2, 3]  # list
my_tuple = (1, 2, 3)  # tuple
my_range = range(1, 10)  # range
my_string = "Hello"  # str

Assigning Set Types

my_set = {1, 2, 3}  # set
my_frozenset = frozenset({1, 2, 3})  # frozenset

Assigning Mapping Types

my_dict = {'key1': 'value1', 'key2': 'value2'}  # dict

Assigning Boolean Type

is_valid = True  # bool

Assigning None Type

result = None  # NoneType

Assigning Other Types

my_bytes = b'Hello'  # bytes
my_bytearray = bytearray(b'Hello')  # bytearray
my_memoryview = memoryview(b'Hello')  # memoryview

Understanding how to use these data types and assign values to them is essential for solving problems efficiently in competitive programming. Each data type has its own set of operations and methods that can be utilized to manipulate data effectively.