A-LevelComputer ScienceString Manipulation and Data StructuresMay/June 2022Paper 2 Q67 Marks
A string represents a series of whole numbers, separated by commas. For example: "12,13,451,22" Assume that: • the comma character ',' is used as a separator • the string contains only the characters '0' to '9' and the comma character ','. A procedure Parse will: • take the string as a parameter • extract each number in turn • calculate the total value and average value of all the numbers • output the total and average values with a suitable message.
📋 Examiner Report & Trap Analysis
Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
🎯 Mark Scheme Breakdown
Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.
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