Merge sort (Edexcel GCSE Computer Science): Quizzes
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Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What approach does merge sort use to sort data?
What approach does merge sort use to sort data?
Divide and conquer
How many main steps does the merge sort process follow?
How many main steps does the merge sort process follow?
4 steps
When does the dividing process stop in merge sort?
When does the dividing process stop in merge sort?
When each list has a single item
What happens in Step 2 of merge sort?
What happens in Step 2 of merge sort?
Pairs sorted in ascending order
During merging, which items from each pair of lists are compared first?
During merging, which items from each pair of lists are compared first?
The first items
What is Step 4 of merge sort?
What is Step 4 of merge sort?
Final merge of 2 remaining lists
When do comparisons happen in merge sort?
When do comparisons happen in merge sort?
During the merging process
Why are individual items considered sorted in merge sort?
Why are individual items considered sorted in merge sort?
Single items are always sorted
How does merge sort compare to bubble sort for large datasets?
How does merge sort compare to bubble sort for large datasets?
Far more efficient
How does merge sort perform with differently arranged data?
How does merge sort perform with differently arranged data?
Consistently well
Why does merge sort reduce comparisons vs bubble sort?
Why does merge sort reduce comparisons vs bubble sort?
It breaks problems into smaller pieces
What is the key principle behind merge sort's effectiveness?
What is the key principle behind merge sort's effectiveness?
Sort small groups then combine