2025 2025
OCR2025
OCR
AS Level
OCR
AS Level
Computer
AS Level
Computer
Computer
Science
Science
H04602
Science
H04602
Algorithms
H04602
Algorithms
Algorithms
and problem
and problem
andsolving
problem
solving
Verified
solving
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Question
Verified
Question
paper
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paper
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2025 OCR AS Level Computer Science
H046/02 Algorithms and problem solving
Verified Question paper with Marking Scheme Attached
Oxford Cambridge and RSA
Monday 19 May 2025 – Afternoon
AS Level Computer Science
H046/02 Algorithms and problem solving
Time allowed: 1 hour 15 minutes
Do not use:
• a calculator
Please write clearly in black ink. Do not write in the barcodes.
Centre number Candidate number
First name(s)
Last name
INSTRUCTIONS
• Use black ink.
• Write your answer to each question in the space provided. If you need extra space use the
lined page at the end of this booklet. The question numbers must be clearly shown.
• Answer all the questions.
INFORMATION
• The total mark for this paper is 70.
• The marks for each question are shown in brackets [ ].
• Quality of extended response will be assessed in questions marked with an asterisk (*).
• This document has 16 pages.
ADVICE
• Read each question carefully before you start your answer
© OCR 2025 [601/5030/0] OCR is an exempt Charity
DC (KS) 324952/8 Turn over
2025 2025
OCR2025
OCR
AS Level
OCR
AS Level
Computer
AS Level
Computer
Computer
Science
Science
H04602
Science
H04602
Algorithms
H04602
Algorithms
Algorithms
and problem
and problem
andsolving
problem
solving
Verified
solving
Verified
Question
Verified
Question
paper
Question
paper
withpaper
Marking
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Scheme
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Scheme
Attached.pdf
Scheme
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Attached.pdf
,2025 2025
OCR2025
OCR
AS Level
OCR
AS Level
Computer
AS Level
Computer
Computer
Science
Science
H04602
Science
H04602
Algorithms
H04602
Algorithms
Algorithms
and problem
and problem
andsolving
problem
solving
Verified
solving
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Question
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paper
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2
1 A gym owner would like a program for members to be able to book gym classes. Each class can have a
maximum of 20 members.
Members will enter their membership ID and then the date and time of the class they want to attend.
Validation rules will check these details meet set rules. If they do not meet the validation rules then an
error message will be displayed. A confirmation message will be displayed if the class is not full. A
bleeping sound will play if the class is full.
(a) Identify two inputs and two outputs for the program.
Input 1 ..............................................................................................................................................
Input 2 ..............................................................................................................................................
Output 1 ...........................................................................................................................................
Output 2 ...........................................................................................................................................
[4]
(b) The programmer is identifying any possible reusable components in the program design.
Explain why the programmer should create reusable program components.
..........................................................................................................................................................
..........................................................................................................................................................
..........................................................................................................................................................
..........................................................................................................................................................
..........................................................................................................................................................
. .................................................................................................................................................................... [3]
© OCR 2025
2025 2025
OCR2025
OCR
AS Level
OCR
AS Level
Computer
AS Level
Computer
Computer
Science
Science
H04602
Science
H04602
Algorithms
H04602
Algorithms
Algorithms
and problem
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andsolving
problem
solving
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,2025 2025
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OCR
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OCR
AS Level
Computer
AS Level
Computer
Computer
Science
Science
H04602
Science
H04602
Algorithms
H04602
Algorithms
Algorithms
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andsolving
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solving
Verified
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Question
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3
BLANK PAGE
DO NOT WRITE ON THIS PAGE
© OCR 2025 Turn over
2025 2025
OCR2025
OCR
AS Level
OCR
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AS Level
Computer
Computer
Science
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H04602
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H04602
Algorithms
H04602
Algorithms
Algorithms
and problem
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andsolving
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solving
Verified
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, 2025 2025
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OCR
AS Level
OCR
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Computer
AS Level
Computer
Computer
Science
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H04602
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H04602
Algorithms
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Algorithms
Algorithms
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4
2 Players in a computer game collect items. Each item has a name, e.g. “Fruit” and a type,
e.g. “Apple”. The items for player 1 are stored in a 2D array. The array is 0-indexed.
The pseudocode declaration for the array is:
array p1Items[10,2]
The first dimension stores the item name and the second dimension stores the type.
(a) One characteristic of the array is that it has 2 dimensions.
Identify two other characteristics of the given array.
1 .......................................................................................................................................................
..........................................................................................................................................................
2 .......................................................................................................................................................
..........................................................................................................................................................
[2]
(b) When the game starts, the pseudocode procedure initialiseArraywill initialise each name and type in the
array to "empty".
01 procedure initialiseArray(p1Items:byRef)
02 counter = 0
03 while counter < 10
04 p1Items[counter, 0] = "empty"
05 p1Items[counter, 1] = "empty"
06 counter = counter + 1
07 endwhile
08 endprocedure
(i) State why emptyis in speech marks on lines 04and 05.
..........................................................................................................................................................
. .................................................................................................................................................................... [1]
(ii) Rewrite the code in lines 02to 07to use a for loop instead of a while loop.
Write your answer using pseudocode or program code.
..........................................................................................................................................................
..........................................................................................................................................................
..........................................................................................................................................................
© OCR 2025
2025 2025
OCR2025
OCR
AS Level
OCR
AS Level
Computer
AS Level
Computer
Computer
Science
Science
H04602
Science
H04602
Algorithms
H04602
Algorithms
Algorithms
and problem
and problem
andsolving
problem
solving
Verified
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paper
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OCR2025
OCR
AS Level
OCR
AS Level
Computer
AS Level
Computer
Computer
Science
Science
H04602
Science
H04602
Algorithms
H04602
Algorithms
Algorithms
and problem
and problem
andsolving
problem
solving
Verified
solving
Verified
Question
Verified
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paper
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paper
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Marking
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Attached.pdf
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Attached.pdf
2025 OCR AS Level Computer Science
H046/02 Algorithms and problem solving
Verified Question paper with Marking Scheme Attached
Oxford Cambridge and RSA
Monday 19 May 2025 – Afternoon
AS Level Computer Science
H046/02 Algorithms and problem solving
Time allowed: 1 hour 15 minutes
Do not use:
• a calculator
Please write clearly in black ink. Do not write in the barcodes.
Centre number Candidate number
First name(s)
Last name
INSTRUCTIONS
• Use black ink.
• Write your answer to each question in the space provided. If you need extra space use the
lined page at the end of this booklet. The question numbers must be clearly shown.
• Answer all the questions.
INFORMATION
• The total mark for this paper is 70.
• The marks for each question are shown in brackets [ ].
• Quality of extended response will be assessed in questions marked with an asterisk (*).
• This document has 16 pages.
ADVICE
• Read each question carefully before you start your answer
© OCR 2025 [601/5030/0] OCR is an exempt Charity
DC (KS) 324952/8 Turn over
2025 2025
OCR2025
OCR
AS Level
OCR
AS Level
Computer
AS Level
Computer
Computer
Science
Science
H04602
Science
H04602
Algorithms
H04602
Algorithms
Algorithms
and problem
and problem
andsolving
problem
solving
Verified
solving
Verified
Question
Verified
Question
paper
Question
paper
withpaper
Marking
with Marking
with
Scheme
Marking
Scheme
Attached.pdf
Scheme
Attached.pdf
Attached.pdf
,2025 2025
OCR2025
OCR
AS Level
OCR
AS Level
Computer
AS Level
Computer
Computer
Science
Science
H04602
Science
H04602
Algorithms
H04602
Algorithms
Algorithms
and problem
and problem
andsolving
problem
solving
Verified
solving
Verified
Question
Verified
Question
paper
Question
paper
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Marking
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2
1 A gym owner would like a program for members to be able to book gym classes. Each class can have a
maximum of 20 members.
Members will enter their membership ID and then the date and time of the class they want to attend.
Validation rules will check these details meet set rules. If they do not meet the validation rules then an
error message will be displayed. A confirmation message will be displayed if the class is not full. A
bleeping sound will play if the class is full.
(a) Identify two inputs and two outputs for the program.
Input 1 ..............................................................................................................................................
Input 2 ..............................................................................................................................................
Output 1 ...........................................................................................................................................
Output 2 ...........................................................................................................................................
[4]
(b) The programmer is identifying any possible reusable components in the program design.
Explain why the programmer should create reusable program components.
..........................................................................................................................................................
..........................................................................................................................................................
..........................................................................................................................................................
..........................................................................................................................................................
..........................................................................................................................................................
. .................................................................................................................................................................... [3]
© OCR 2025
2025 2025
OCR2025
OCR
AS Level
OCR
AS Level
Computer
AS Level
Computer
Computer
Science
Science
H04602
Science
H04602
Algorithms
H04602
Algorithms
Algorithms
and problem
and problem
andsolving
problem
solving
Verified
solving
Verified
Question
Verified
Question
paper
Question
paper
withpaper
Marking
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Scheme
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Attached.pdf
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Attached.pdf
,2025 2025
OCR2025
OCR
AS Level
OCR
AS Level
Computer
AS Level
Computer
Computer
Science
Science
H04602
Science
H04602
Algorithms
H04602
Algorithms
Algorithms
and problem
and problem
andsolving
problem
solving
Verified
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Question
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3
BLANK PAGE
DO NOT WRITE ON THIS PAGE
© OCR 2025 Turn over
2025 2025
OCR2025
OCR
AS Level
OCR
AS Level
Computer
AS Level
Computer
Computer
Science
Science
H04602
Science
H04602
Algorithms
H04602
Algorithms
Algorithms
and problem
and problem
andsolving
problem
solving
Verified
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paper
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, 2025 2025
OCR2025
OCR
AS Level
OCR
AS Level
Computer
AS Level
Computer
Computer
Science
Science
H04602
Science
H04602
Algorithms
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Algorithms
Algorithms
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andsolving
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solving
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4
2 Players in a computer game collect items. Each item has a name, e.g. “Fruit” and a type,
e.g. “Apple”. The items for player 1 are stored in a 2D array. The array is 0-indexed.
The pseudocode declaration for the array is:
array p1Items[10,2]
The first dimension stores the item name and the second dimension stores the type.
(a) One characteristic of the array is that it has 2 dimensions.
Identify two other characteristics of the given array.
1 .......................................................................................................................................................
..........................................................................................................................................................
2 .......................................................................................................................................................
..........................................................................................................................................................
[2]
(b) When the game starts, the pseudocode procedure initialiseArraywill initialise each name and type in the
array to "empty".
01 procedure initialiseArray(p1Items:byRef)
02 counter = 0
03 while counter < 10
04 p1Items[counter, 0] = "empty"
05 p1Items[counter, 1] = "empty"
06 counter = counter + 1
07 endwhile
08 endprocedure
(i) State why emptyis in speech marks on lines 04and 05.
..........................................................................................................................................................
. .................................................................................................................................................................... [1]
(ii) Rewrite the code in lines 02to 07to use a for loop instead of a while loop.
Write your answer using pseudocode or program code.
..........................................................................................................................................................
..........................................................................................................................................................
..........................................................................................................................................................
© OCR 2025
2025 2025
OCR2025
OCR
AS Level
OCR
AS Level
Computer
AS Level
Computer
Computer
Science
Science
H04602
Science
H04602
Algorithms
H04602
Algorithms
Algorithms
and problem
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andsolving
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