Exam Tips

Part of Linear Search · Section 7 of 8

Study NotesUnit: 3.1 Fundamentals of AlgorithmsGCSE

This study notes covers Exam Tips within Linear Search for GCSE Computer Science. Revise Linear Search in 3.1 Fundamentals of Algorithms for GCSE Computer Science with 15 exam-style questions and 8 flashcards. This topic shows up very often in GCSE exams, so students should be able to explain it clearly, not just recognise the term. It is section 7 of 8 in this topic. Use this study notes to connect the idea to the wider topic before moving on to questions and flashcards.

Exam Tips

Binary requirement: ALWAYS mention data must be sorted
Show your working: When tracing binary search, show the midpoint at each step
Common mistake: Saying binary is "always better" - linear works on unsorted data

Practice questions for Linear Search

How does a linear search work?

A. It divides the list in half repeatedly until the item is found
B. It checks each element in the list one at a time, from start to end
C. It sorts the list first, then jumps directly to the target item
D. It starts from the middle of the list and works outwards

1 markfoundation

Describe how a linear search works on a list of n items. [3 marks]

3 marksstandard

Quick recall flashcards

What does linear search do?

Checks each item from start to end until found

What does binary search require?

Data must be sorted

Memory Trick

Knowledge Organiser: Linear Search and Binary Search

15 questions on Linear Search — practise free

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