Q&A – Repetition Makes Algorithms Concise (Primary 4 – 4CT.03)

Using repetition makes an algorithm shorter.

• True

• False

Which of these two algorithms is more concise?

• A

• B

• Both the same

Using a loop makes an algorithm more _______.

• concise (or shorter/efficient)

• complicated

• lengthy

• confusing

Do they give the same output? Which is better?

• Yes, they give the same output and one is better than the other.

• No, they do not give the same output and neither is better.

• Yes, they give the same output and neither is better.

• No, they do not give the same output but one is better.

Q5. Debugging
The algorithm should clap 5 times, but the student wrote:
OUTPUT "Clap"
OUTPUT "Clap"

How to make it correct and concise?

• Use a loop to OUTPUT "Clap" 5 times

• Write OUTPUT "Clap" five times in a row

• Change OUTPUT to INPUT

• Remove all OUTPUT statements

Writing 10 lines of “OUTPUT Hello” is better than using a loop.

• True

• False

Why do programmers use loops?

• To make programs longer

• To make programs shorter and easier

• To confuse people

Compare the Length Which algorithm is shorter?

• Algorithm A

• Algorithm B

How would you write a concise algorithm to make a robot say “Hi” 20 times?

• Repeat 20 times OUTPUT "Hi"

• Repeat 10 times OUTPUT "Hi"

• Repeat 20 times OUTPUT "Hello"

• Repeat 2 times OUTPUT "Hi"

Why is it important for algorithms to be concise?

• Concise algorithms are easier to read, edit, and debug. Repetition reduces long code, making algorithms clearer and less error-prone.

• Concise algorithms are always faster than longer ones, regardless of logic.

• Concise algorithms use more memory, making them preferable.

• Concise algorithms are more difficult to understand, which increases security.