Practice Problem Description (43.1.2) - Longest common subsequence - Part A
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Problem Description

Practice - Problem Description

Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

Define the Longest Common Subsequence in your own words.

💡 Hint: Think about characters that can match in both sequences.

Question 2 Easy

What is a brute force algorithm?

💡 Hint: Consider how you would test every possible pair.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What does LCS stand for?

Longest Common Substring
Longest Common Subsequence
Longest Common Structure

💡 Hint: Think about which option describes sequence relationships.

Question 2

The time complexity of the brute force LCS algorithm is?

O(n)
O(n²)
O(n³)

💡 Hint: Consider how many checks are being made for every possible character pairing.

2 more questions available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Given strings 'ABCDEF' and 'AEBDF', find the LCS and describe the steps taken.

💡 Hint: Focus on keeping track of matches as you compare.

Challenge 2 Hard

Discuss the implications of LCS in natural language processing.

💡 Hint: Consider how identifying common phrases can improve understanding.

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