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Questions and Answers
What is a Python string?
What is a Python string?
- A list of Unicode characters operated by Python functions
- A collection of in-built Python functions
- A sequence of characters enclosed in quotation marks (correct)
- A set of operations that can be performed on lists
What is the time complexity for changing the case of Python strings?
What is the time complexity for changing the case of Python strings?
- O(1)
- O(n^2)
- O(log n)
- O(n) (correct)
What is the auxiliary space complexity for changing the case of Python strings?
What is the auxiliary space complexity for changing the case of Python strings?
- O(n)
- O(log n)
- O(1) (correct)
- O(n^2)
What is the definition of a Python string method?
What is the definition of a Python string method?
What is the best way to describe the nature of a Python string method?
What is the best way to describe the nature of a Python string method?
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Study Notes
Python Strings
- A Python string is a sequence of characters enclosed in quotes (either single quotes or double quotes) used to represent textual data.
String Operations
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The time complexity for changing the case of Python strings (e.g., upper(), lower(), title(), etc.) is O(n), where n is the length of the string, because each character in the string needs to be processed.
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The auxiliary space complexity for changing the case of Python strings is O(n), as a new string is created with the modified case.
String Methods
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A Python string method is a function that can be used to manipulate and analyze a string.
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Python string methods are best described as immutable, meaning they do not modify the original string but instead return a new string with the modifications.
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