GCSE

• It allows the programmer to ignore irrelevant details (e.g. wall colour, seat type) [1]
• And focus only on the essential data needed for the model (e.g. number of patients, wait times) [1]
• This makes the program easier to design / reduces memory usage / speeds up development [1]

• Translates high-level code... -> Both [1]
• Translates and executes... line-by-line -> Interpreter [1]
• Produces a final executable file... -> Compiler [1]
• Stops translating... first error is found -> Interpreter [1]

• Editor [1]
• Error diagnostics [1]
• Run-time environment [1]
• Translator [1]

• A syntax error breaks the grammatical rules of the programming language [1]
• ...and prevents the code from running/compiling [1]
• A logic error is a flaw in the algorithm/thinking [1]
• ...the code will still run, but produces an unexpected or incorrect output [1]

• Iterative testing is done during the development process [1]
• ...testing individual modules/subprograms as they are built [1]
• Terminal testing is done at the end of development [1]
• ...testing the whole integrated program against the original requirements [1]

• Take the first item and place it in the 'sorted' list [1]
• Take the next item and compare it to the item(s) in the sorted list [1]
• Insert the item into its correct ordered position within the sorted list [1]
• Repeat this process for all remaining items in the unsorted list [1]

• An Insertion Sort only compares items as far as needed to find the insertion point [1]
• Whereas a Bubble Sort compares every adjacent pair throughout the entire list [1]
• If the list is almost sorted, the Insertion Sort requires very few shifts [1]
• ...making it much faster / requiring fewer passes than Bubble Sort [1]

• Row 1: priority=6, p=1 [1]
• Row 2: priority=8, p=2 [1]
• Row 3: priority=11, p=3 [1]
• Row 4: flag=False [1]
• Output: 11 [1]

• Initialises a running total variable to 0 (outside loop) [1]
• Correct FOR loop (or equivalent) [1]
• Loop ranges from 0 to 49 (or iterates exactly 50 times) [1]
• Accesses the 1D array correctly inside the loop [1]
• Adds the array element to the running total [1]
• Calculates the average by dividing total by 50 (outside loop) [1]
• Outputs the calculated average [1]
• Algorithm logically sound throughout [1]

total = 0
for i = 0 to 49
   total = total + triageTimes[i]
next i
average = total / 50
print(average)

• It allows iteration/loops to be used [1] which reduces the amount of code needed [1].
• It groups related data under a single identifier [1] making the code easier to read and maintain [1].

• Indentation [1] to show the structure of selection blocks (if/else) [1]
• Comments [1] to explain the logic of the severity check to other programmers [1]