A developer is writing an algorithm to find the largest number in a list of 10 positive integers.

Mark scheme

Marking points from the official mark scheme. The mark or mark type is shown in brackets.

1. **(a)**
2. B1 for Array / List
3. **(b)**
4. C1 for initialising a variable for the largest number (e.g., to the first element or 0 if all positive)
5. C1 for correctly looping through the list of 10 numbers (e.g. FOR loop 1 to 10 / WHILE loop)
6. C1 for using a conditional statement (IF statement) inside the loop
7. C1 for comparing current number with stored largest number
8. C1 for updating the largest number variable if a larger number is found
9. C1 for outputting the largest number after the loop terminates
10. Accept variations in pseudocode syntax as long as the logic is clear and correct.
11. Example Pseudocode:
12. LIST_OF_NUMBERS = [num1, num2, ..., num10] // Assume input/populated list
13. LARGEST = LIST_OF_NUMBERS[0] // Or 0 if guaranteed positive
14. FOR EACH NUMBER IN LIST_OF_NUMBERS
15. IF NUMBER > LARGEST THEN
16. LARGEST = NUMBER
17. END IF
18. NEXT NUMBER
19. OUTPUT LARGEST