Absent Without Leave

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

Domain

Python

Difficulty

medium

Seniority

L4

Problem

A monitoring export hands you the sorted, distinct record IDs that actually landed in a log, plus the inclusive `lower` and `upper` bounds of the ID range that should have been there. Return the `[start, end]` ranges covering every ID in `[lower, upper]` that is absent from `nums`, each range stretched as wide as it can go and a lone missing ID written as `[x, x]`.

Summary

Between the first name and the last, the ones who never showed. Account for them.

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