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Button [4.1 - Codes] Write code to do the following: Remove all the special characters from each code in the array to create a new code - NSC Information Technology - Question 4 - 2023 - Paper 1
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Button [4.1 - Codes] Write code to do the following: Remove all the special characters from each code in the array to create a new code. Count how many special cha... show full transcript
Worked Solution & Example Answer:Button [4.1 - Codes] Write code to do the following: Remove all the special characters from each code in the array to create a new code - NSC Information Technology - Question 4 - 2023 - Paper 1
Step 1
Button [4.1 - Codes]
Answer
To solve this problem, we will followa structured approach.
-
Initialize the variables: Begin by initializing a counter for special characters and an empty string to store the new code without special characters.
-
Iterate over the array: Use a loop to iterate through each code in the
arrCodesarray. -
Process each character: For each code, iterate through its characters. Check if each character is a letter (a-z, A-Z) or a digit (0-9). If it is, append it to the new code string; otherwise, increase the special character counter.
-
Store results: After processing each code, determine the length of the original code and subtract the length of the new code to find the number of characters removed. Format your output to include the new code and the number of special characters removed. Finally, display the result in the designated list box
lstQ4_1.
Here’s an example of how to implement the code in pseudocode:
for i from 1 to length of arrCodes
sLine = ''
specialCount = 0
for each char in arrCodes[i]
if char is letter or digit
sLine += char
else
specialCount += 1
end for
add to lstQ4_1 in the format: <New code>(<number of special characters deleted>)
end for
Step 2
Button [4.2.1 - Extra IT periods]
Answer
To implement the extra IT periods, follow these steps:
-
Loop through the days: Set a loop that iterates from 1 to 4, corresponding to Monday through Thursday.
-
Check for empty cells: Inside the loop, use a conditional to check if the current cell in
arrTimeTableis not blank. -
Insert IT period: If the cell is empty, assign 'IT' to that cell in the
arrTimeTable. -
Count and ensure correctness: Use a counter to track how many times 'IT' has been added. Ensure all periods get filled correctly.
The following pseudocode illustrates this logic:
for i from 1 to 4
if arrTimeTable[i] is not blank
continue
arrTimeTable[i] = 'IT'
end for
Step 3
Button [4.2.2 - Group IT]
Answer
To group the IT periods consecutively, implement the following steps:
-
Loop through days: Set up a loop that goes from 1 to 4 for Monday to Thursday.
-
Find occurrences of 'IT': For each day, loop through the subjects in
arrTimeTable. Find the first and second occurrences of 'IT'. -
Rearrange the periods: After finding the occurrences, swap the second 'IT' with another subject, making sure they are next to each other.
Here’s a possible pseudocode implementation:
for i from 1 to 4
count = 0
for j from 1 to length of arrTimeTable[i]
if arrTimeTable[i][j] == 'IT'
count += 1
if count == 1
firstITIndex = j
if count == 2
secondITIndex = j
swap arrTimeTable[i][secondITIndex] with arrTimeTable[i][firstITIndex + 1]
break
end for