estion
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question
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A/AS=2025
paper,
Exam-Ready
including
OCRExaminer
AS
theLevel
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Question
Science
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Paper
H04602
with
all examinable
Exam-Ready
Algorithms
content
and
Examiner
problem
with Verified
Mark
solving
Scheme.
Answers2025
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H04602
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Algorithms
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
1
DC (KS) 324952/8
OCR A/AS
Turn over Page 1
,estion
S LevelPaper
question
OCR with
A/AS=2025
paper,
Exam-Ready
including
OCRExaminer
AS
theLevel
complete
Mark
Computer
Scheme.
Question
Science
Covers
Paper
H04602
with
all examinable
Exam-Ready
Algorithms
content
and
Examiner
problem
with Verified
Mark
solving
Scheme.
Answers2025
Verified
Covers
Question
OCR
all examinable
AS
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Level
withComputer
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Attached.pdf
H04602
Answers
Algorithms
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
2 OCR A/AS Page 2
,estion
S LevelPaper
question
OCR with
A/AS=2025
paper,
Exam-Ready
including
OCRExaminer
AS
theLevel
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Mark
Computer
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Question
Science
Covers
Paper
H04602
with
all examinable
Exam-Ready
Algorithms
content
and
Examiner
problem
with Verified
Mark
solving
Scheme.
Answers2025
Verified
Covers
Question
OCR
all examinable
AS
paper
Level
withComputer
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Science
Verified
Attached.pdf
H04602
Answers
Algorithms
3
BLANK PAGE
DO NOT WRITE ON THIS PAGE
© OCR 2025 Turn over
3 OCR A/AS Page 3
,estion
S LevelPaper
question
OCR with
A/AS=2025
paper,
Exam-Ready
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OCRExaminer
AS
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Question
Science
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Paper
H04602
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Algorithms
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Examiner
problem
with Verified
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solving
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Answers2025
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Attached.pdf
H04602
Answers
Algorithms
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
4 OCR A/AS Page 4
S LevelPaper
question
OCR with
A/AS=2025
paper,
Exam-Ready
including
OCRExaminer
AS
theLevel
complete
Mark
Computer
Scheme.
Question
Science
Covers
Paper
H04602
with
all examinable
Exam-Ready
Algorithms
content
and
Examiner
problem
with Verified
Mark
solving
Scheme.
Answers2025
Verified
Covers
Question
OCR
all examinable
AS
paper
Level
withComputer
content
Markingwith
Scheme
Science
Verified
Attached.pdf
H04602
Answers
Algorithms
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
1
DC (KS) 324952/8
OCR A/AS
Turn over Page 1
,estion
S LevelPaper
question
OCR with
A/AS=2025
paper,
Exam-Ready
including
OCRExaminer
AS
theLevel
complete
Mark
Computer
Scheme.
Question
Science
Covers
Paper
H04602
with
all examinable
Exam-Ready
Algorithms
content
and
Examiner
problem
with Verified
Mark
solving
Scheme.
Answers2025
Verified
Covers
Question
OCR
all examinable
AS
paper
Level
withComputer
content
Markingwith
Scheme
Science
Verified
Attached.pdf
H04602
Answers
Algorithms
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
2 OCR A/AS Page 2
,estion
S LevelPaper
question
OCR with
A/AS=2025
paper,
Exam-Ready
including
OCRExaminer
AS
theLevel
complete
Mark
Computer
Scheme.
Question
Science
Covers
Paper
H04602
with
all examinable
Exam-Ready
Algorithms
content
and
Examiner
problem
with Verified
Mark
solving
Scheme.
Answers2025
Verified
Covers
Question
OCR
all examinable
AS
paper
Level
withComputer
content
Markingwith
Scheme
Science
Verified
Attached.pdf
H04602
Answers
Algorithms
3
BLANK PAGE
DO NOT WRITE ON THIS PAGE
© OCR 2025 Turn over
3 OCR A/AS Page 3
,estion
S LevelPaper
question
OCR with
A/AS=2025
paper,
Exam-Ready
including
OCRExaminer
AS
theLevel
complete
Mark
Computer
Scheme.
Question
Science
Covers
Paper
H04602
with
all examinable
Exam-Ready
Algorithms
content
and
Examiner
problem
with Verified
Mark
solving
Scheme.
Answers2025
Verified
Covers
Question
OCR
all examinable
AS
paper
Level
withComputer
content
Markingwith
Scheme
Science
Verified
Attached.pdf
H04602
Answers
Algorithms
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
4 OCR A/AS Page 4
