Backtracking Algorithms (OCR A-Level Computer Science): Quizzes
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Practise the questions
11 questions from this quiz
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Practise the questions
11 questions from this quiz
What does backtracking do when a solution path is found to be invalid?
What does backtracking do when a solution path is found to be invalid?
Abandons it and tries a different path
In the backtracking process, what is verified during the 'Check Constraints' step?
In the backtracking process, what is verified during the 'Check Constraints' step?
If current path satisfies constraints
Which type of problems is backtracking particularly useful for?
Which type of problems is backtracking particularly useful for?
Constraint satisfaction problems
In the N-Queens problem, what can no two queens share?
In the N-Queens problem, what can no two queens share?
Same row, column, or diagonal
In the N-Queens problem, when does the algorithm backtrack?
In the N-Queens problem, when does the algorithm backtrack?
When no valid column is found
In the maze solver, which directions are considered valid moves?
In the maze solver, which directions are considered valid moves?
Up, down, left, right
What benefit does backtracking provide regarding invalid paths?
What benefit does backtracking provide regarding invalid paths?
Quickly eliminates paths not meeting constraints
Why is backtracking considered relatively easy to implement?
Why is backtracking considered relatively easy to implement?
It uses recursion
What is an example of worst-case time complexity for certain backtracking problems?
What is an example of worst-case time complexity for certain backtracking problems?
What happens if you forget to restore state when backtracking?
What happens if you forget to restore state when backtracking?
Leads to incorrect solutions
What can an incorrect base case cause in backtracking algorithms?
What can an incorrect base case cause in backtracking algorithms?
Infinite recursion