The Window Cleaner

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

Domain

Python

Difficulty

medium

Seniority

L4

Problem

Each user session is captured as one string of single-character event codes, with `s` holding the codes for one replay. Find the length of the longest stretch within `s` where no event code appears twice.

Summary

Keep it fresh, keep it unique.

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