Stock Analysis

Problem Overview

• From multiple data sources ordered by increasing preference, determine the final value for each key; later sources override earlier ones while keeping keys in the order first seen.
• Input: String[][] sources (each row is a source); Output: consolidated key-value list; constraints n: 1–99, p: 1–999.
• Context: Data/stock analysis consolidation of parameters like ratings from different providers.
• Asked in Goldman interviews; a coding interview interview question problem focused on data merging behavior.