Designing, creating and refining algorithms
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A marine biologist writes a program to calculate and print the total swimming depth (in meters) recorded for Shark 5 over 8 hourly intervals (represented by indices 0 to 7) from a 2D array called depthData.

totalDepth = 0

totalDepth = totalDepth + depthData[5, 0]

totalDepth = totalDepth + depthData[5, 1]

totalDepth = totalDepth + depthData[5, 2]

totalDepth = totalDepth + depthData[5, 3]

totalDepth = totalDepth + depthData[5, 4]

totalDepth = totalDepth + depthData[5, 5]

totalDepth = totalDepth + depthData[5, 6]

totalDepth = totalDepth + depthData[5, 7]

print(totalDepth)

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

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