# Count appearances of characters from B in A

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Source: https://www.aced.io/questions/682/count-appearances-characters-string-a
Source observed: 2026-11-05T00:29:24.619Z
Last checked: 2026-11-05T00:29:24.619+00:00
Indexed: 2026-11-06T07:05:41.612+00:00

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# Given two strings, A and B, how do you count the appearances of characters from B in A?

We list technical interview questions and experiences for interview preparation. This question is categorized as **Technical** and is associated with **Machine Learning Engineer** roles and **Meta** and **Google**.

## Interview experiences

One shared experience is available:

- **Meta · 10 months ago** — A candidate interviewing for **Software Engineer, Machine Learning, Senior / L5** described a recruiter screen, online coding assessment, live coding round, recruiter debrief, and a virtual onsite with three coding interviews, one behavioral interview, and one system design interview. The coding rounds were mostly classic algorithm questions. The system design question concerned a recommendation system for ranking locations in a feed for someone visiting a new city. [Read the full Meta experience](https://www.aced.io/experiences/meta-facebook-senior-machine-learning-engineer-interview-16fb62)

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### [Behavioral Interviews: A Practical Guide for Engineers](https://www.aced.io/courses/eng-behavioral)

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