> ## Documentation Index
> Fetch the complete documentation index at: https://leetcode-py.wisl.dev/llms.txt
> Use this file to discover all available pages before exploring further.

> ## Agent Instructions
> leetcode-py is a Python LeetCode practice environment generator with one CLI: lcpy. It is not a service or platform.
> Each problem is a directory under leetcode/ with README.md, solution.py, test_solution.py, helpers.py, and playground.ipynb. lcpy gen creates them from JSON templates bundled with the package.
> Examples are backed by tests; copy them verbatim.

# Blind 75, Grind 75, NeetCode and Others

> Curated problem sets as tags, and how they drive bulk generation.

Collections are curated problem lists (Grind 75, Blind 75, the NeetCode
roadmaps) encoded as tags. Every collection is a tag you can filter, list,
and bulk-generate with. Membership is defined in `tags.json5` inside the
[JSON resources](https://leetcode-py.wisl.dev/contributing/problem-creation.md); `lcpy` reads it for `-t`
filters.

## The collections

| Collection | What it gives you |
| - | - |
| [`grind-75`](https://leetcode-py.wisl.dev/catalog/grind-75) | The essential 75 from Tech Interview Handbook, ordered by a study plan |
| [`grind`](https://leetcode-py.wisl.dev/catalog/grind) | Extended Grind; superset of Grind 75 with more problems |
| [`blind-75`](https://leetcode-py.wisl.dev/catalog/blind-75) | The classic curated list that started the trend |
| [`neetcode-150`](https://leetcode-py.wisl.dev/catalog/neetcode-150) | Comprehensive NeetCode coverage by topic |
| [`neetcode-250`](https://leetcode-py.wisl.dev/catalog/neetcode-250) | NeetCode 150 plus 100 more |
| [`neetcode`](https://leetcode-py.wisl.dev/catalog/neetcode) | The complete neetcode.io list; coverage still growing |
| [`algo-master-75`](https://leetcode-py.wisl.dev/catalog/algo-master-75) | Algorithmic mastery set curated in this repo, 75 problems |

Current problem counts live on the [Catalog](https://leetcode-py.wisl.dev/catalog.md) pages, which are
generated straight from the templates and never go stale.

## Preview before you generate

```bash theme={"theme":{"light":"github-light","dark":"github-dark"}}
lcpy list -t grind-75              # every problem in the collection
lcpy list -t neetcode-250 -d Hard  # narrow to one difficulty
```

## Generate a whole collection

```bash theme={"theme":{"light":"github-light","dark":"github-dark"}}
lcpy gen -t grind-75        # all of Grind 75 into ./
lcpy gen -t blind-75 -o leetcode
lcpy gen -t grind-75 -d Easy   # just the Easy problems
```

Bulk generation prints one `Generated problem:` line per problem and
creates each directory with the standard
[six files](https://leetcode-py.wisl.dev/practice/problem-anatomy.md).

![Bulk generation output for all Grind 75 problems](https://mintcdn.com/leetcode-py/VCrzlUI648LnF7Pk/images/problems-generation.png?fit=max\&auto=format\&n=VCrzlUI648LnF7Pk\&q=85\&s=250d1e38c0c0d2de1781bc4d410b1fdd)

![Folder structure with all generated problem directories](https://mintcdn.com/leetcode-py/VCrzlUI648LnF7Pk/images/problems-generation-2.png?fit=max\&auto=format\&n=VCrzlUI648LnF7Pk\&q=85\&s=2cbe0e093965964eb6291eebbd3e2b1f)

## Picking a collection

Short on time: `grind-75`. Want the classic list everyone references:
`blind-75`. Preparing by topic with video explanations: `neetcode-150`.
The right collection is the one you will finish; every one of them
generates the same high-quality problem directories.


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