This question runs in a pre-configured Salesforce environment - no personal connection required.

Return the names of the top N accounts sorted by AnnualRevenue in descending order. Only include accounts with non-null AnnualRevenue values. If the limit is less than 1, return an empty list.

Write a method that accepts an Integer representing the number of top accounts to retrieve and returns a List of String containing the account names.

Examples

Example 1: Basic Usage

Input: topN = 3

Output: ['Account A', 'Account B', 'Account C']

Explanation: Returns the 3 accounts with the highest revenue values, sorted in descending order by AnnualRevenue.

Example 2: Zero Limit

Input: topN = 0

Output: []

Explanation: When the limit is zero or negative, return an empty list.

Example 3: Limit Larger Than Data

Input: topN = 100

Output: List of all accounts with non-null revenue

Explanation: If the limit exceeds the number of accounts with revenue data, return all qualifying accounts.

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