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The trees at the nursery are categorised using the types Citrus, Deciduous, Nut, and Tropical - NSC Information Technology - Question 4 - 2019 - Paper 1
Question 4
The trees at the nursery are categorised using the types Citrus, Deciduous, Nut, and Tropical. Do the following: - Open the incomplete program in the Question 4 fo... show full transcript
Worked Solution & Example Answer:The trees at the nursery are categorised using the types Citrus, Deciduous, Nut, and Tropical - NSC Information Technology - Question 4 - 2019 - Paper 1
Step 1
Button [4.1 - Separate by type]
Answer
To solve this part, follow these steps:
- Initialize Loop: Set up a loop that iterates from 1 to the number of types in
arrTypes(iTypes). - Set Column: For each iteration, initialize the column value to 0.
- Nested Loop: Add a nested loop that iterates through each tree in
arrListfrom index 1 to 24. - Character Test: Check the first character of each tree in
arrListat the current index against the values inarrTypes.- For example, if the last character of
arrListis 'C', use it to determine the tree's type.
- For example, if the last character of
- Store by Type: Based on the type determined, increase the column for
arrTrees[row, column]storing the value accordingly. - Enable Buttons: After processing all entries, enable buttons
btnQ4_2andbtnQ4_3.
Step 2
Button [4.2 - Display]
Answer
To display the information, execute the following:
- Initialize Loop: Set up a loop that again iterates from 1 to the number of types (iTypes).
- String Variable: Declare a string variable
sLineinitialized to an empty string for each row. - Nested Loop: Create another loop to iterate through each column up to the number of trees in that type (iNum).
- Concatenate Values: For each entry (
arrTrees[row, col]), concatenate it tosLinefollowed by a space for better formatting. - Display Output: Finally, print the value of
sLineto the output area.
Step 3
Button [4.3 - Sort alphabetically]
Answer
To handle the sorting, perform the following steps:
- Initialize Outer Loop: Loop from 1 to iTypes to iterate over each type of tree.
- Remove Characters: For each tree, strip the last two characters. Use a loop from 1 to iNum and do the following:
- For each
arrTrees[row, col], execute the substring operation to remove the unwanted characters.
- For each
- Sorting Algorithm: Implement a sorting mechanism to arrange
arrTrees[row]in alphabetical order according to tree names. - Execute Button: Run the code in button
btnQ4_2to ensure and display the sorted list of trees.