Implement EMA Crossovers and Root Solvers
Company: Squarepoint
Role: Data Scientist
Category: Coding & Algorithms
Difficulty: medium
Interview Round: Technical Screen
Quick Answer: This question evaluates time-series data manipulation and vectorized pandas operations for EMA crossovers, numerical methods and error analysis for implementing a square-root approximation, combinatorial reasoning for counting polygon diagonals, and state-space problem-solving for the classic water-jug reachability puzzle.