Datasets:
Tasks:
Text Classification
Sub-tasks:
multi-class-classification
Languages:
English
Size:
10K<n<100K
Tags:
interview-questions
placements
campus-recruitment
computer-science
aptitude
technical-interviews
License:
Delete README.md
Browse files
README.md
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---
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license: cc-by-4.0
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language:
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- en
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task_categories:
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- text-classification
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tags:
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- interview-questions
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- computer-science
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- placements
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pretty_name: AskedBefore CS Interview Questions
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size_categories:
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- 1K<n<10K
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configs:
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- config_name: default
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data_files:
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- split: train
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path: askedbefore_cs_interview_questions.csv
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---
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# AskedBefore CS Interview Questions
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1,350 computer science interview questions, each labelled with its **subject** (9 classes) and **difficulty** (easy / medium / hard). Built for training and evaluating question-topic classifiers, and as a practice bank for placement and internship interviews.
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## Dataset structure
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| Column | Description |
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|---|---|
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| `id` | Unique id (`ab-0000` to `ab-1349`) |
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| `question` | The interview question, one sentence |
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| `subject` | One of 9 subjects (below) |
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| `difficulty` | `easy`, `medium` or `hard` |
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| `source_type` | `original`: written for this dataset, not copied from any website |
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| `version` | `v1` (first 720 questions) or `v2` (630 added in the second release) |
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**Subjects (150 questions each):** DSA, Operating Systems, DBMS & SQL, Computer Networks, OOP, System Design, Machine Learning, Statistics & Analytics, Behavioral / HR.
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**Difficulty per subject:** about 38 easy, 86 medium and 26 hard.
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## How it was made
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- Questions cover concepts commonly tested in software engineering, ML and data interviews.
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- Every question is **written in original wording**. None are copied from interview-prep websites, problem platforms or company question lists.
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- Questions were drafted with AI assistance and then reviewed and labelled by the maintainer.
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- Difficulty labels are a judgement call and should be treated as approximate.
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## Versions
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- **v1:** 720 questions (80 per subject).
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- **v2:** 630 more questions (70 per subject), for 1,350 total. Ids of v1 questions did not change.
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## Intended uses
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- Training text classifiers that tag a question with its subject (baselines: TF-IDF + Logistic Regression, Random Forest, XGBoost).
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- Practice question banks for students preparing for technical interviews.
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## Limitations
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- Questions are short and in English only.
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- The dataset does **not** say which company asked which question. It covers concepts, not company-specific reports.
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- Some questions sit between subjects (for example, LRU cache appears in both DSA and System Design interviews); each has one label.
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## License
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[CC BY 4.0](https://creativecommons.org/licenses/by/4.0/). You can share and adapt it, including commercially, as long as you give credit.
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## Citation
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```
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@misc{askedbefore_cs_interview_questions,
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title = {AskedBefore CS Interview Questions},
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author = {Aditya},
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year = {2026},
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url = {https://huggingface.co/datasets/YOUR_USERNAME/askedbefore-cs-interview-questions}
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}
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```
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