The Low That Came Too Late

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

Domain

Python

Difficulty

easy

Seniority

mid

Problem

A trading feed hands you a day's prices in the order they were captured, and we want the largest gain a single buy-then-sell could have booked. Buying has to happen before the sell, so a low that only appears after the day's high is off limits. Return 0 when no pair of moments would have turned a profit.

Summary

You only get to buy before you sell. Find the biggest gain the day allowed.

Practice This Problem

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