Portfolio Profit Calculator

A medium Python interview practice problem on DataDriven. Write and execute real python code with instant grading.

Domain

Python

Difficulty

medium

Seniority

L6

Problem

Given purchases (list of [date, shares] pairs) and prices (dict mapping date to price), compute total_cost = sum(shares * prices[date]) across purchases. Compute current_value = total_shares * latest_price where latest_price is prices for the latest date key (sorted). Return current_value - total_cost.

Summary

Portfolio gain from purchase history and current prices.

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