How do I practice coding and algorithm questions?

Use PracHub's coding console to write, test, and debug your solutions in Python or JavaScript. View hints, test against sample inputs, and compare with official solutions.

What difficulty level is this coding question?

This is a easy difficulty Coding & Algorithms question, commonly asked during Onsite rounds at Google.

What role is this question designed for?

This question is commonly asked for Software Engineer candidates at Google during technical interviews.

Find Common Free Time Slots Across Calendars

Quick Overview

This question evaluates a candidate's ability to work with interval merging and sweep-line techniques over multiple overlapping schedules. It tests practical coding skill in handling edge cases like half-open intervals, boundary touching, and multi-way set intersection, a common pattern in coding and algorithms interviews. The question requires applying array and interval-processing concepts at an implementation level rather than purely conceptual understanding.

easy
Google
Coding & Algorithms
Software Engineer