Add 2625. Flatten Deeply Nested Array solution, add .hintrc, and remo…#255
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WalkthroughLeetCodeの問題2625「Flatten Deeply Nested Array」に関するドキュメント、実装例、対話的な学習資料を追加します。同時に、SRI検証スクリプトを削除し、新しい開発環境用のlint設定ファイルを導入しています。 Changes
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Actionable comments posted: 6
🤖 Fix all issues with AI agents
In `@JavaScript/2625`. Flatten Deeply Nested Array/Claude Code Sonnet 4.5
extended/FlattenDeeplyNestedArray_TS.ipynb:
- Around line 526-531: The notebook contains an empty Markdown cell (cell_type:
"markdown", id: "253e2ebb") as the final cell; remove this unnecessary empty
cell from the notebook JSON (or replace its empty "source" with the intended
content) so the notebook no longer ends with an empty markdown cell — locate the
cell by its id "253e2ebb" or by it being the last cell and delete or populate it
accordingly.
- Around line 178-179: The statement claiming "`push(...array)` is more
efficient than a loop" conflicts with your own performance results; update the
notebook to accurately describe the spread operator's overhead by replacing that
sentence with a note that using spread (`push(...array)`) can allocate and
iterate internally and may be slower than an explicit loop in hot paths (as
shown by your 156ms→80ms measurement when replacing `push(...flattened)` with
per-item `push`), and reference the exact example variables/functions used in
the analysis (e.g., the `flattened` array and the code block where
`push(...flattened)` was replaced by a loop) so readers can locate the
benchmark.
- Around line 29-33: Update the comparison table row for "reduce連鎖" to correct
its time complexity from O(N) to O(N²); locate the table entry string that
starts with "| reduce連鎖" in the notebook and change the second column value to
"O(N²)" so it matches the later performance analysis and README references.
In `@JavaScript/2625`. Flatten Deeply Nested Array/Claude Code Sonnet 4.5
extended/README_react.html:
- Around line 1861-1881: The useEffect that advances autoplay references
stepsData.length but doesn't include it in the dependency array; update the
dependency array for the useEffect handling isPlaying/activeStep to include
stepsData.length (or stepsData) so ESLint exhaustive-deps is satisfied and the
effect re-runs if the steps length changes; keep the existing logic inside the
effect (timerRef, setIsPlaying, setActiveStep) unchanged.
- Around line 9-41: Add SRI integrity and crossorigin="anonymous" attributes to
every external <script> and <link> tag (e.g., the Tailwind CDN script tag,
Google Fonts preconnect/stylesheet links, Prism.css & plugins links, and the
React/ReactDOM/Babel unpkg scripts) so each resource includes a valid
sha384/sha512 integrity hash; compute those hashes using the removed
verify_sri.py or another trusted tool and apply the exact integrity values, and
ensure crossorigin="anonymous" is present on the same tags to allow SRI
verification.
- Around line 34-38: Replace the development UMD scripts (react.development.js
and react-dom.development.js) with the production minified UMD builds by
updating the script src values to react.production.min.js and
react-dom.production.min.js (e.g.
https://unpkg.com/react@18/umd/react.production.min.js and
https://unpkg.com/react-dom@18/umd/react-dom.production.min.js); keep the
crossorigin attribute and optionally add integrity hashes, or if using a bundler
ensure NODE_ENV=production so the production React builds are used instead of
the development files.
Comment on lines
+29
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+33
| "| アプローチ | 時間計算量 | 空間計算量 | TS実装コスト | 型安全性 | 可読性 | 備考 |\n", | ||
| "|---------|----------|-----------|------------|---------|-------|-----|\n", | ||
| "| 再帰的展開 | O(N) | O(N + D) | 低 | 高 | 高 | N=全要素数、D=深さ。最も直感的 |\n", | ||
| "| スタック反復 | O(N) | O(N + D) | 中 | 高 | 中 | スタックオーバーフロー回避可能 |\n", | ||
| "| reduce連鎖 | O(N) | O(N + D) | 中 | 中 | 中 | 関数型スタイル、やや複雑 |\n", |
Contributor
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reduce版の時間計算量がO(N)と記載されていますが、実際はO(N²)です。
Line 33の比較表では reduce連鎖 の時間計算量が O(N) と記載されていますが、後のパフォーマンス分析セクション（Line 195-197）では concat() が毎回新配列を生成するため実質 O(N²) と正しく説明されています。また、README.mdでも O(N²) と記載されています。
比較表の時間計算量を O(N²) に修正してください。
📝 修正提案
- "| reduce連鎖 | O(N) | O(N + D) | 中 | 中 | 中 | 関数型スタイル、やや複雑 |\n",
+ "| reduce連鎖 | O(N²) | O(N² + D) | 中 | 中 | 中 | 関数型スタイル、concat()で配列再生成のため非効率 |\n",🤖 Prompt for AI Agents
In `@JavaScript/2625`. Flatten Deeply Nested Array/Claude Code Sonnet 4.5
extended/FlattenDeeplyNestedArray_TS.ipynb around lines 29 - 33, Update the
comparison table row for "reduce連鎖" to correct its time complexity from O(N) to
O(N²); locate the table entry string that starts with "| reduce連鎖" in the
notebook and change the second column value to "O(N²)" so it matches the later
performance analysis and README references.
Comment on lines
+178
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+179
| "- **配列操作**: `push(...array)` は一度に複数要素を追加するため、ループより効率的\n", | ||
| "- **メモリ**: 結果配列は避けられないO(N)。コールスタックはO(D)で十分小さい" |
Contributor
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スプレッド演算子に関する記述がノートブック内の他の分析と矛盾しています。
push(...array)は一度に複数要素を追加するため、ループより効率的
この記述は、同じノートブックのパフォーマンス分析セクションの結論と矛盾しています。パフォーマンス分析では、スプレッド演算子の排除（push(...flattened) → ループで個別push）により156ms→80msに改善されたと述べています。
この行を修正するか、スプレッド演算子のオーバーヘッドについての正確な説明に置き換えてください。
📝 修正提案
- "- **配列操作**: `push(...array)` は一度に複数要素を追加するため、ループより効率的\n",
+ "- **配列操作**: `push(...array)` は大規模配列で内部コピーコストが発生するため、1要素ずつ `push()` する方が効率的\n",📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
Suggested change
| "- **配列操作**: `push(...array)` は一度に複数要素を追加するため、ループより効率的\n", | |
| "- **メモリ**: 結果配列は避けられないO(N)。コールスタックはO(D)で十分小さい" | |
| "- **配列操作**: `push(...array)` は大規模配列で内部コピーコストが発生するため、1要素ずつ `push()` する方が効率的\n", | |
| "- **メモリ**: 結果配列は避けられないO(N)。コールスタックはO(D)で十分小さい" |
🤖 Prompt for AI Agents
In `@JavaScript/2625`. Flatten Deeply Nested Array/Claude Code Sonnet 4.5
extended/FlattenDeeplyNestedArray_TS.ipynb around lines 178 - 179, The statement
claiming "`push(...array)` is more efficient than a loop" conflicts with your
own performance results; update the notebook to accurately describe the spread
operator's overhead by replacing that sentence with a note that using spread
(`push(...array)`) can allocate and iterate internally and may be slower than an
explicit loop in hot paths (as shown by your 156ms→80ms measurement when
replacing `push(...flattened)` with per-item `push`), and reference the exact
example variables/functions used in the analysis (e.g., the `flattened` array
and the code block where `push(...flattened)` was replaced by a loop) so readers
can locate the benchmark.
Comment on lines
+526
to
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| { | ||
| "cell_type": "markdown", | ||
| "id": "253e2ebb", | ||
| "metadata": {}, | ||
| "source": [] | ||
| } |
Contributor
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🧹 Nitpick | 🔵 Trivial
空のMarkdownセルが残っています。
最後のセル（cell_type: "markdown"）が空です。不要であれば削除してください。
🤖 Prompt for AI Agents
In `@JavaScript/2625`. Flatten Deeply Nested Array/Claude Code Sonnet 4.5
extended/FlattenDeeplyNestedArray_TS.ipynb around lines 526 - 531, The notebook
contains an empty Markdown cell (cell_type: "markdown", id: "253e2ebb") as the
final cell; remove this unnecessary empty cell from the notebook JSON (or
replace its empty "source" with the intended content) so the notebook no longer
ends with an empty markdown cell — locate the cell by its id "253e2ebb" or by it
being the last cell and delete or populate it accordingly.
Comment on lines
+9
to
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| <script src="https://cdn.tailwindcss.com"></script> | ||
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| <!-- Google Fonts --> | ||
| <link rel="preconnect" href="https://fonts.googleapis.com" /> | ||
| <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin /> | ||
| <link | ||
| href="https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700;800&family=JetBrains+Mono:wght@400;500;600&family=Source+Code+Pro:wght@400;600;700&display=swap" | ||
| rel="stylesheet" | ||
| /> | ||
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| <!-- Prism.js CSS --> | ||
| <link | ||
| rel="stylesheet" | ||
| href="https://cdnjs.cloudflare.com/ajax/libs/prism/1.29.0/themes/prism-tomorrow.min.css" | ||
| /> | ||
| <link | ||
| rel="stylesheet" | ||
| href="https://cdnjs.cloudflare.com/ajax/libs/prism/1.29.0/plugins/line-numbers/prism-line-numbers.min.css" | ||
| /> | ||
| <link | ||
| rel="stylesheet" | ||
| href="https://cdnjs.cloudflare.com/ajax/libs/prism/1.29.0/plugins/toolbar/prism-toolbar.min.css" | ||
| /> | ||
|
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||
| <!-- React & ReactDOM --> | ||
| <script crossorigin src="https://unpkg.com/react@18/umd/react.development.js"></script> | ||
| <script | ||
| crossorigin | ||
| src="https://unpkg.com/react-dom@18/umd/react-dom.development.js" | ||
| ></script> | ||
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| <!-- Babel Standalone --> | ||
| <script src="https://unpkg.com/@babel/standalone/babel.min.js"></script> |
Contributor
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CDNリソースにSRI（Subresource Integrity）ハッシュがありません。
外部CDN（unpkg.com、cdnjs.cloudflare.com、cdn.tailwindcss.com）から読み込むすべてのスクリプト・スタイルシートにSRIハッシュが付与されていません。CDNが侵害された場合、悪意あるコードが注入されるリスクがあります。
特に、このPRで verify_sri.py（SRIハッシュ検証スクリプト）を削除している点を考慮すると、SRI対策の欠如は懸念事項です。
各 <script> と <link> タグに integrity 属性と crossorigin="anonymous" を追加してください。例：
<script src="https://cdnjs.cloudflare.com/ajax/libs/prism/1.29.0/prism.min.js"
integrity="sha512-..."
crossorigin="anonymous"></script>🤖 Prompt for AI Agents
In `@JavaScript/2625`. Flatten Deeply Nested Array/Claude Code Sonnet 4.5
extended/README_react.html around lines 9 - 41, Add SRI integrity and
crossorigin="anonymous" attributes to every external <script> and <link> tag
(e.g., the Tailwind CDN script tag, Google Fonts preconnect/stylesheet links,
Prism.css & plugins links, and the React/ReactDOM/Babel unpkg scripts) so each
resource includes a valid sha384/sha512 integrity hash; compute those hashes
using the removed verify_sri.py or another trusted tool and apply the exact
integrity values, and ensure crossorigin="anonymous" is present on the same tags
to allow SRI verification.
Comment on lines
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| <script crossorigin src="https://unpkg.com/react@18/umd/react.development.js"></script> | ||
| <script | ||
| crossorigin | ||
| src="https://unpkg.com/react-dom@18/umd/react-dom.development.js" | ||
| ></script> |
Contributor
There was a problem hiding this comment.
Reactの開発ビルドが使用されています。
react.development.js と react-dom.development.js が使用されています。開発ビルドは本番ビルドより大幅に遅く、コンソールに警告が出力されます。ドキュメントとして公開・共有する場合は、本番ビルドを使用してください。
🔧 本番ビルドへの変更提案
- <script crossorigin src="https://unpkg.com/react@18/umd/react.development.js"></script>
+ <script crossorigin src="https://unpkg.com/react@18/umd/react.production.min.js"></script>
<script
crossorigin
- src="https://unpkg.com/react-dom@18/umd/react-dom.development.js"
+ src="https://unpkg.com/react-dom@18/umd/react-dom.production.min.js"
></script>📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
Suggested change
| <script crossorigin src="https://unpkg.com/react@18/umd/react.development.js"></script> | |
| <script | |
| crossorigin | |
| src="https://unpkg.com/react-dom@18/umd/react-dom.development.js" | |
| ></script> | |
| <script crossorigin src="https://unpkg.com/react@18/umd/react.production.min.js"></script> | |
| <script | |
| crossorigin | |
| src="https://unpkg.com/react-dom@18/umd/react-dom.production.min.js" | |
| ></script> |
🤖 Prompt for AI Agents
In `@JavaScript/2625`. Flatten Deeply Nested Array/Claude Code Sonnet 4.5
extended/README_react.html around lines 34 - 38, Replace the development UMD
scripts (react.development.js and react-dom.development.js) with the production
minified UMD builds by updating the script src values to react.production.min.js
and react-dom.production.min.js (e.g.
https://unpkg.com/react@18/umd/react.production.min.js and
https://unpkg.com/react-dom@18/umd/react-dom.production.min.js); keep the
crossorigin attribute and optionally add integrity hashes, or if using a bundler
ensure NODE_ENV=production so the production React builds are used instead of
the development files.
Comment on lines
+1861
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| useEffect(() => { | ||
| if (isPlaying) { | ||
| if (activeStep > stepsData.length) { | ||
| setIsPlaying(false); | ||
| setActiveStep(1); | ||
| return; | ||
| } | ||
|
|
||
| timerRef.current = setTimeout(() => { | ||
| if (activeStep === stepsData.length) { | ||
| setActiveStep(1); | ||
| setIsPlaying(false); | ||
| } else { | ||
| setActiveStep((prev) => prev + 1); | ||
| } | ||
| }, 2000); | ||
| } | ||
| return () => { | ||
| if (timerRef.current) clearTimeout(timerRef.current); | ||
| }; | ||
| }, [isPlaying, activeStep]); |
Contributor
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🧹 Nitpick | 🔵 Trivial
useEffectの依存配列にstepsData.lengthが含まれていません。
stepsDataはコンポーネント外の定数なので実際には問題になりませんが、activeStep > stepsData.length（Line 1863）とactiveStep === stepsData.length（Line 1870）の条件分岐で参照しているため、厳密にはESLintのexhaustive-depsルールで警告される可能性があります。現状は定数のため実害はありません。
🤖 Prompt for AI Agents
In `@JavaScript/2625`. Flatten Deeply Nested Array/Claude Code Sonnet 4.5
extended/README_react.html around lines 1861 - 1881, The useEffect that advances
autoplay references stepsData.length but doesn't include it in the dependency
array; update the dependency array for the useEffect handling
isPlaying/activeStep to include stepsData.length (or stepsData) so ESLint
exhaustive-deps is satisfied and the effect re-runs if the steps length changes;
keep the existing logic inside the effect (timerRef, setIsPlaying,
setActiveStep) unchanged.
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…ve verify_sri.py
JavaScript/2625. Flatten Deeply Nested Array/ 配下のファイルを追加
.hintrc を追加
verify_sri.py を削除