Unit 1 - 2.Sorting algorithms

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By Ala Jaber

Multiple Choice

Which is the clearest example of sorting in everyday apps?

• A. Encrypting your messages

• B. Compressing a video before upload

• C. Ordering songs by “Most Recently Added” in a music app

• D. Translating a post into another language

Multiple Choice

Why do services like shopping sites, contacts, and email use sorting?

• A. To help users find items faster and more easily

• B. To delete duplicate files automatically

• C. To protect accounts from hackers

• D. To reduce the device’s screen brightness

Multiple Choice

Which action clearly uses a sorting algorithm?

• A. Shuffling songs randomly in a playlist

• B. Listing films by most recent release date first

• C. Compressing a video to a smaller size

• D. Translating captions to another language

Multiple Choice

You want to browse contacts alphabetically. What should you sort by?

• A. Phone number

• B. First message time

• C. Home address

• D. Surname

Multiple Choice

In a bubble sort, what happens during each comparison step?

• A. The first and last values are swapped

• B. Only the smallest and largest values are compared

• C. Adjacent values are compared and swapped if out of order

• D. Random pairs are compared

Multiple Choice

In bubble sort, what is a pass?

• A. One complete sweep through the list comparing/swapping adjacent items

• B. A single swap between two items

• C. Sorting just the first two items

• D. When the first item reaches its final position

Multiple Choice

After the first pass on 2, 8, 1, 4, 9 (ascending), what is the list?

• A. 2, 1, 4, 8, 9

• B. 1, 2, 4, 8, 9

• C. 2, 4, 1, 8, 9

• D. 2, 8, 1, 4, 9

Multiple Choice

After the second pass completes, which sequence do we have?

• A. 2, 1, 4, 8, 9

• B. 1, 2, 4, 8, 9

• C. 2, 4, 1, 8, 9

• D. 2, 8, 1, 4, 9