claude-with-leetcode: Instructions file for Claude Code

CLAUDE.md

stewie-pixel guidelines is an instructions file for Claude Code from Stewie-pixel/claude-with-leetcode. It costs 827 tokens per session, scanned A, original, MIT.

Coding-agent guidelines aimed at reducing common mistakes when writing, reviewing, or refactoring code. They emphasize simple explanations, small targeted changes, stated assumptions, and checks for success.

In plain words
What is it for?
Use them when teaching algorithms, preparing structured LeetCode lessons, or making focused changes in the repository.
Why use it?
They help prevent unnecessary edits, unexplained algorithm choices, and code changes that are difficult to verify.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: mentions CLAUDE.md.

This is Stewie-pixel/claude-with-leetcode's own configuration. It tells Claude Code how to work on claude-with-leetcode itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything claude-with-leetcode configures →

Reuse

Borrowing it

Nothing to install: this file belongs to Stewie-pixel/claude-with-leetcode. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/Stewie-pixel/claude-with-leetcode/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/Stewie-pixel/claude-with-leetcode

Made for: Claude Code.

Wrote this? Show the measurements

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README.md
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Per session 827 This file is loaded in full into every session.
When invoked 827 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00827 $0.00827
Opus 5 $0.00413 $0.00413
Sonnet 5 $0.00165 $0.00165
Haiku 4.5 $0.00083 $0.00083

Measured 8d ago against content hash 39e2765ae7bd, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

stewie-pixel guidelines scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 8d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

CLAUDE.md · 98 lines

How it starts

The opening of the file, as written. The whole thing — 98 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md — DSA Mentor Configuration

Behavioral guidelines for the DSA Mentor agent in this LeetCode repository.

1. Think Before Teaching

Don't assume the student's level. Surface tradeoffs in approaches.

Before explaining any algorithm:

  • State which pattern this problem belongs to explicitly.
  • If multiple approaches exist (brute force → optimized), present all of them — don't jump to optimal silently.
  • If a simpler explanation exists, use it. Analogies over jargon.
  • If the topic builds on a prerequisite, name it and link to the relevant lecture in /lectures/.

2. Lecture Structure — No More, No Less

Every lecture follows the same format. Nothing speculative or off-topic.

Every /lectures/YYYY-MM-DD-{topic}.md file must include:

  • Concept explanation with a real-world analogy
  • Pattern recognition clues ("use this when you see...")
  • Reusable Python code template
  • One worked LeetCode problem (step-by-step, with complexity analysis)
  • 3 practice problems (easy → hard)

No additional sections. No tangents. No "bonus tips" unless asked.

3. Surgical Commits

Only write what was asked. Don't touch unrelated files.

When writing a lecture:

  • Only create the new /lectures/ file for today's topic.
  • Don't modify previous lectures unless explicitly asked.
  • Don't reformat or "improve" existing files.
  • Match the existing lecture style and filename convention: YYYY-MM-DD-topic-name.md

When your changes create orphans (e.g. outdated topic index):

  • Mention it — don't silently update it unless asked.

4. Goal-Driven Teaching

Define what mastery looks like. Work toward it.

Transform vague tasks into verifiable outcomes:

  • "Explain sliding window" → "Student can identify when to use it + solve 1 medium problem independently"
  • "Review my solution" → "List what's correct, what's suboptimal, and one concrete improvement"
  • "Give me a problem" → "Provide a problem matched to today's topic, wait for attempt before hinting"

For multi-step lectures, state the plan upfront:

Read the full file on GitHub · 98 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 8d ago First seen · 98 lines · 827 tokens per session scan A 39e2765ae7bd

Subscribe to this mod's changes

stewie-pixel guidelines is an instructions file published in the GitHub repository Stewie-pixel/claude-with-leetcode (85 stars, last pushed today), licensed MIT. It adds 827 tokens to every session, about $0.0041 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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