Get Largest Index Length

Problem Overview

• Find the largest set of indices where feature1 and feature2 maintain the same strict ordering for every pair; equal feature1 values among chosen indices are not allowed.
• Input: two integer arrays, feature1 and feature2. Output: an integer giving the maximum length of such an index set.
• Real-world context: identifying outlier-free subsets in co-related features for data analysis.
• This Amazon coding interview problem is a common interview question focused on ordering constraints in paired data.