Second largest order total

Python data engineering interview problem. Difficulty: beginner. Pattern: Sorting. About 10 minutes. Part of the Pro drill bank.

Finance dumps daily order totals into a list. Reporting wants the second-highest distinct amount so they can compare the runner-up basket to the winner, even when many orders share the top value.

Return the second-largest distinct number from a list of order totals.

Requirements

• Ranking is over distinct values, not over list positions.
• If fewer than two distinct values exist, return None.

Constraints

• Negative totals can appear.

Examples

Input: second_largest([1, 5, 5, 3]) Output: 3 This input follows the stated rules and produces this output.

Topics: lakebench, python, lists.

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