Practice Using The Len Function (6.1.2) - Strings - Part B - Data Structures and Algorithms in Python
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Using the len Function

Practice - Using the len Function

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Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What is the result of concatenating 'abc' and 'def'?

💡 Hint: Think about how strings are joined together.

Question 2 Easy

What does len('Python') return?

💡 Hint: Count the number of letters in 'Python'.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What does the len() function do?

Counts the letters in a string
Concatenates two strings
Slices a string

💡 Hint: Think about the functionality of the len() function.

Question 2

True or False: Strings in Python are mutable.

True
False

💡 Hint: Recall what immutability means.

3 more questions available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Given s = 'abcdefg', write a function that takes an integer and returns a new string by replacing the character at that index with 'z', without modifying the original string.

💡 Hint: You need to create a new string; think about how slices allow you to do this.

Challenge 2 Hard

Create a function that takes a string and returns the first half of the string if its length is even, or the first half plus the middle character if odd.

💡 Hint: Consider how to determine whether the length is odd or even and how slicing can help you retrieve the correct portion of the string.

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Reference links

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