Designing, creating and refining algorithms
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A researcher writes a program to calculate and print the total rainfall (in mm) recorded by Sensor 3 over 7 days (represented by indices 0 to 6) from a 2D array called rainfallData.

totalRain = 0

totalRain = totalRain + rainfallData[3, 0]

totalRain = totalRain + rainfallData[3, 1]

totalRain = totalRain + rainfallData[3, 2]

totalRain = totalRain + rainfallData[3, 3]

totalRain = totalRain + rainfallData[3, 4]

totalRain = totalRain + rainfallData[3, 5]

totalRain = totalRain + rainfallData[3, 6]

print(totalRain)

Refine the program to make it more efficient by using a loop. Write the refined version of the algorithm.

You must use either:

  • OCR Exam Reference Language, or
  • a high-level programming language that you have studied.
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Designing, creating and refining algorithms Questions

Practise OCR GCSE Computer Science Designing, creating and refining algorithms with exam-style questions for GCSE Computer Science. 50 questions, matched to the OCR GCSE Computer Science (J277) specification and written in Component 01 and Component 02 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.

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Designing, creating and refining algorithms Questions

  1. GCSE
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