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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 hard difficulty Coding & Algorithms question, commonly asked during Onsite rounds at Bytedance.

What role is this question designed for?

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

Least Frequently Used (LFU) Cache | Bytedance Coding Question

Quick Overview

This question tests practical data structure design by requiring an O(1) implementation of a Least Frequently Used cache with tie-breaking by recency. It evaluates a software engineer's ability to combine hash maps and ordered collections to enforce eviction policies, a skill commonly assessed in system design and algorithm interviews.

hard
Bytedance
Coding & Algorithms
Software Engineer

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