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The following subroutines control the way labelled blocks are placed in different columns - AQA - GCSE Computer Science - Question 13 - 2021 - Paper 1
Question 13
The following subroutines control the way labelled blocks are placed in different columns. BLOCK_ON_TOP(column) returns the label of the block on top of the column ... show full transcript
Worked Solution & Example Answer:The following subroutines control the way labelled blocks are placed in different columns - AQA - GCSE Computer Science - Question 13 - 2021 - Paper 1
Step 1
Draw the final arrangement of the blocks after the following algorithm has run.
Answer
After executing the commands, the following arrangements will occur:
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After
MOVE(0, 1): Block C moves from Column 0 to Column 1.Column 0 Column 1 Column 2 A C B
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After
MOVE(0, 2): Block A moves from Column 0 to Column 2.Column 0 Column 1 Column 2
C A B
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After
MOVE(0, 2): There are no more blocks in Column 0 to move, so the arrangement remains the same.
Final Arrangement:
Column 0 Column 1 Column 2
C A B