AQA GCSE COMPUTER SCIENCE Paper 1 Computational thinking and programming skills – Python May 2023

AQA

GCSE
COMPUTER SCIENCE
Paper 1 Computational thinking and
programming skills – Python

May 2023

, 2
Do not write
outside the
Answer all questions. box




0 1 Figure 1 shows an algorithm, represented using pseudo-code, which assigns a
different value to four variables.

Figure 1

country  'United States of America'
state  'California'
city  'San Francisco'
landmark  'Alcatraz Island'


0 1 . 1 Define the term algorithm.
[2 marks]




0 1 . The variable x is assigned a value using the
2 statement:

x  LEN(state)

Using Figure 1, what is the value of x?

Shade one lozenge. [1 mark]


A 1

B 5

C 10

D 12




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, 3
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outside the
0 1 . What is the result of concatenating the contents of the variables city box
3 and
landmark in Figure

1? Shade one lozenge. [1 mark]


A San Francisco Alcatraz Island

B San Francisco,Alcatraz Island

C San Francisco, Alcatraz Island

D San FranciscoAlcatraz Island



0 1 .4 The subroutine SUBSTRING extracts characters from a given string.

For example, SUBSTRING(3, 5, 'Computing') would return
put

The variable y is assigned a value using the statement:

y  SUBSTRING(4, 7, landmark)

Using Figure 1, what is the value of y?

Shade one lozenge. [1 mark]


A Alca

B Atra

C land

D traz



Question 1 continues on the next page




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IB/G/Jun23/8525/1B

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Figure 1 has been included again below. box



Figure 1

country  'United States of America'
state  'California'
city  'San Francisco'
landmark  'Alcatraz Island'


0 1 .5 The subroutine POSITION finds the first position of a character in a

string. For example, POSITION('Computing', 'p') would return

3

The variable z is assigned a value using the statement:

z  POSITION(landmark, 't')

Using Figure 1, what value is assigned to z?
[1 mark]
Shade one lozenge.


A –1

B 3

C 4
6
D 5




IB/G/Jun23/8525/1B