Arrays and String Manipulation Audio Quiz Quiz

1. Convert List to String

   Suppose you have a list or array of values in a single column and you want to convert this list to a string in order to clean the data. Which technique would best help you achieve this?

   1. Use a join function with a chosen separator
   2. Use a sort function directly
   3. Use a transpose function only
   4. Apply a numeric sum function
   5. Use a filter to remove empty rows

2. Removing Duplicates from Array Data

   What approach allows you to remove duplicate entries from a list and produce a string with only unique values?

   1. Applying a unique concatenate function during aggregation
   2. Sorting the array in descending order
   3. Splitting the string into individual characters
   4. Multiplying all array elements
   5. Adding an empty column

3. Cleaning Strings from Specific Characters

   To remove unwanted characters from a string resulting from your array, which type of function is most appropriate?

   1. removeChars() in a string manipulation step
   2. sumChars() function
   3. duplicateRemover() function
   4. uniqueSort() option
   5. concatAll() method

4. Array to String Conversion in Code

   Given an array in your workflow and a need to export it as a string for downstream use, what code logic would combine array elements separated by a character of your choice?

   1. joinSep(',', value1, value2, ...)
   2. splitArray(' ', values)
   3. findMax(array)
   4. sumStringElements(array)
   5. arrayReduce('-', values)

5. Using a Group Aggregation

   When aggregating multiple columns into a single list and you want the combined result as a string, which aggregation method should you consider?

   1. Use the Column Aggregator node with unique concatenate
   2. Set the columns to numeric sum
   3. Transpose the data before grouping
   4. Filter the array after grouping
   5. Duplicate all columns

6. Exporting Collection Data

   You want to export a collection cell but notice the preview shows only part of it with a '...'. What is a good next step to view all elements?

   1. Right-click on the header and select full collection rendering
   2. Apply a removeNulls function
   3. Use sum to display all items
   4. Convert to numeric only
   5. Export to CSV directly without checking

7. String Output for Array in Scripting

   When crafting a string output from an array for use in external scripts, what is a good approach for formatting?

   1. Wrap the joined values in brackets and separate with commas
   2. Simply leave values unaltered
   3. Sum all integer values
   4. Remove all whitespace using trim only
   5. Encode as a hexadecimal number

8. Difference Between join and joinSep

   You want to merge array elements into a string efficiently. Which function allows you to automatically add a custom separator between all elements?

   1. joinSep
   2. sumArray
   3. splitJoin
   4. indexConcat
   5. repeatJoin

9. List to String Pitfalls

   If you use a unique concatenate aggregation and some data is missing or empty, what is a common problem you might encounter?

   1. Extra empty fields included in the output string
   2. All data is sorted alphabetically
   3. Every element is lowercased automatically
   4. Multiple results are returned
   5. Array elements are changed to numbers

10. Array Aggregation Tool Selection

    Which type of tool would you use if you need to combine many columns, regardless of how many there are, into a single string?

    1. Column Combiner node
    2. Array Flattener node
    3. Sum Elements node
    4. UniqueItemizer node
    5. FilterByType node