---
license: apache-2.0
language:
- en
tags:
- coding
- software
pretty_name: HackerRank Public Sample Dataset
size_categories:
- 1K<n<10K
---

| Field                           | Type<sup>†</sup>  | What it contains                                                                  |
| ------------------------------- | ----------------- | --------------------------------------------------------------------------------- |
| `challenge_id`                  | **integer**       | Unique numeric identifier for the coding challenge                                |
| `challenge_slug`                | string            | URL-friendly slug used in challenge links                                         |
| `challenge_name`                | string            | Human-readable challenge title                                                    |
| `challenge_body`                | string            | Full challenge description (HTML/Markdown) including input/output, examples, etc. |
| `challenge_kind`                | string            | High-level content type (e.g., `code`, `game`)                                    |
| `challenge_preview`             | string            | One-sentence teaser shown in listings                                             |
| `challenge_category`            | string            | Top-level category such as `ai`, `algorithms`, `databases`                        |
| `challenge_created_at`          | ISO 8601 string   | When the challenge was first created                                              |
| `challenge_updated_at`          | ISO 8601 string   | Most-recent metadata update time                                                  |
| `python3_template`              | string (nullable) | Complete Python 3 starter code supplied to users                                  |
| `python3_template_head`         | string (nullable) | Header portion of the Python 3 template                                           |
| `python3_template_tail`         | string (nullable) | Footer portion of the Python 3 template                                           |
| `problem_statement`             | string            | Canonical statement (often plain-text version of `challenge_body`)                |
| `difficulty`                    | float             | Continuous difficulty score in \[0, 1]                                            |
| `allowed_languages`             | JSON string       | Array of language identifiers permitted for submissions                           |
| `input_format`                  | string (nullable) | “Input Format” section verbatim                                                   |
| `output_format`                 | string (nullable) | “Output Format” section verbatim                                                  |
| `sample_input`                  | string (nullable) | Example stdin for the challenge                                                   |
| `sample_output`                 | string (nullable) | Expected stdout for the sample input                                              |
| `difficulty_tag`                | string            | Discrete label (`Easy`, `Medium`, `Hard`)                                         |
| `editorial_title`               | string            | Title of the official editorial article                                           |
| `editorial_content`             | string            | Full HTML body of the editorial                                                   |
| `editorial_draft`               | boolean (0/1)     | `1` if editorial is still a draft                                                 |
| `editorial_slug`                | string            | URL-friendly slug for the editorial                                               |
| `editorial_published_at`        | ISO 8601 string   | Publication timestamp of the editorial                                            |
| `editorial_statistics`          | JSON string       | Engagement stats (participation, submissions, success rate)                       |
| `editorial_created_at`          | ISO 8601 string   | Editorial first-save timestamp                                                    |
| `editorial_updated_at`          | ISO 8601 string   | Last editorial edit time                                                          |
| `editorial_solution_kind`       | string            | Tag for reference solution (e.g., `tester`, `reference`)                          |
| `editorial_solution_code`       | string            | Full reference solution source code                                               |
| `editorial_solution_language`   | string            | Language of the reference solution                                                |
| `editorial_solution_created_at` | ISO 8601 string   | Creation time of the reference solution                                           |
| `editorial_solution_updated_at` | ISO 8601 string   | Last update time of the reference solution                                        |
| `language`                      | string            | Detected programming language for this row                                        |