Update FibonacciCoreCalucaltion.java

[jasonwang82]

PR Type

Documentation

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Description

• Added author JavaDoc comment to FibonacciCoreCalucaltion.java

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File Walkthrough

	Relevant files
Documentation	FibonacciCoreCalucaltion.java Add author documentation comment                                                  src/main/java/com/emc/test/fibonacci/FibonacciCoreCalucaltion.java Added JavaDoc author tag with name "Jason.Wang" +3/-0

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Summary by CodeRabbit

• Documentation
  • Improved internal documentation by adding an author header to the core Fibonacci calculation component, enhancing maintainability and traceability.
  • No functional or UI changes; performance and behavior remain unchanged.
  • No configuration or API adjustments required; existing workflows continue to operate as before.
  • Purely a documentation update; suitable for low-risk deployment.
  • Release does not require testing beyond standard verification.

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PR Compliance Guide 🔍

Below is a summary of compliance checks for this PR:

Security Compliance
🟢	No security concerns identified No security vulnerabilities detected by AI analysis. Human verification advised for critical code.
Ticket Compliance
⚪	🎫 No ticket provided Create ticket/issue
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🟢 - Fully Compliant
🟡 - Partial Compliant
🔴 - Not Compliant
⚪ - Requires Further Human Verification
🏷️ - Compliance label

[coderabbitai]

Walkthrough

Added an author Javadoc header to an existing Java class. No code, API, or behavior changes.

Changes

Cohort / File(s)	Summary
Documentation header update src/main/java/com/emc/test/fibonacci/FibonacciCoreCalucaltion.java	Added author Javadoc comment; no functional modifications.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Poem

A nibble of notes atop the code I see,
A carrot-signed comment, neat as can be.
No loops disturbed, no numbers askew—
Just names in the stars, a header anew.
Thump-thump goes the merge, hop-hooray, woo! 🥕🐇

Pre-merge checks and finishing touches

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title Check	✅ Passed	The title clearly identifies the file that was modified, which directly matches the only change in the pull request, so it is related to the changeset even though it does not explicitly describe the addition of Javadoc documentation. It is not off-topic or misleading and refers to a real aspect of the update. Therefore it meets the criteria for a passing title.
Docstring Coverage	✅ Passed	No functions found in the changes. Docstring coverage check skipped.

✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch patch-1

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PR Code Suggestions ✨

No code suggestions found for the PR.

[coderabbitai]

Actionable comments posted: 0

Caution

Some comments are outside the diff and can’t be posted inline due to platform limitations.

⚠️ Outside diff range comments (2)

src/main/java/com/emc/test/fibonacci/FibonacciCoreCalucaltion.java (2)

66-81: Add n==0 base case to pow method
Without it, pow(0) recurses infinitely—before the n==1 check, return a new identity matrix (1s on diagonal, 0s elsewhere) for n==0.

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28-35: Off-by-one in Fibonacci outputs.

Mⁿ = [[F(n+1), F(n)], [F(n), F(n-1)]] so
• temp[1][1] = F(i-1), temp[1][0] = F(i), temp[0][0] = F(i+1)
Current code prints F(i-1), F(i), F(i+1) but the loop intends F(i), F(i+1), F(i+2).
Fix:

-                if (i <= size)
-                    out.println(temp[1][1]);
-                if (i + 1 <= size)
-                    out.println(temp[1][0]);
-                if (i + 2 <= size)
-                    out.println(temp[0][0]);
+                if (i <= size)
+                    out.println(temp[1][0]);                // F(i)
+                if (i + 1 <= size)
+                    out.println(temp[0][0]);                // F(i+1)
+                if (i + 2 <= size)
+                    out.println(temp[0][0].add(temp[1][0])); // F(i+2)

Confirm intended indexing (0- or 1-based).

🧹 Nitpick comments (4)

src/main/java/com/emc/test/fibonacci/FibonacciCoreCalucaltion.java (4)

1-3: Javadoc added — consider brief class description and license header.

Nice to have: add a 1–2 line summary of what this class does and, if applicable, a license header.

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13-16: Class name is misspelled; consider renaming to FibonacciCoreCalculation.

Current name: FibonacciCoreCalucaltion. Renaming improves clarity and discoverability. This is a breaking change (file/class rename and references). Consider a follow‑up PR.

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20-23: Use BigInteger constants instead of string parsing.

Replace new BigInteger("1"/"0") with BigInteger.ONE/BigInteger.ZERO for clarity and performance.

Apply:

-        matrix[0][0] = new BigInteger("1");
-        matrix[0][1] = new BigInteger("1");
-        matrix[1][0] = new BigInteger("1");
-        matrix[1][1] = new BigInteger("0");
+        matrix[0][0] = BigInteger.ONE;
+        matrix[0][1] = BigInteger.ONE;
+        matrix[1][0] = BigInteger.ONE;
+        matrix[1][1] = BigInteger.ZERO;

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25-43: Prefer try‑with‑resources and explicit UTF‑8 encoding when writing files.

Avoids resource leaks and platform‑dependent encodings.

Apply:

-        PrintWriter out = null;
-        try {
-            out = new PrintWriter(new FileOutputStream(fileName));
+        try (PrintWriter out = new PrintWriter(
+                fileName,
+                java.nio.charset.StandardCharsets.UTF_8.name())) {
             for (int i = startNum; i <= size; i = i + 3) {
                 temp = pow(i);
                 if (i <= size)
                     out.println(temp[1][1]);
                 if (i + 1 <= size)
                     out.println(temp[1][0]);
                 if (i + 2 <= size)
                     out.println(temp[0][0]);
             }
-        } catch (Exception e) {
+        } catch (Exception e) {
             LOGGER.error(e.getMessage(), e);
-        } finally {
-            if (out != null) {
-                out.close();
-            }
-        }
+        }

📜 Review details

Configuration used: CodeRabbit UI

Review profile: CHILL

Plan: Pro

Knowledge base: Disabled due to Reviews -> Disable Knowledge Base setting

📥 Commits

Reviewing files that changed from the base of the PR and between 8cf60b4 and 0e6b94d.

📒 Files selected for processing (1)

• src/main/java/com/emc/test/fibonacci/FibonacciCoreCalucaltion.java (1 hunks)