contribution Interview Questions

This Amazon interview problem asks you to compute a specific aggregate sum over all possible contiguous subarrays of a given input array. For each individual subarray, you must determine the number of unique values it contains. The ultimate goal is to sum these distinct counts across every single subarray. This challenge tests your ability to efficiently iterate through subarrays and, more critically, to optimize the process of counting distinct elements within them, often requiring techniques like sliding windows or clever data structures to avoid redundant computations. The full problem and model solution require a subscription.