Add solution for Challenge 19 by jim3

[jim3]

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[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 547d7fb3-9c8b-41cc-bcb9-bc888dbc4013

📥 Commits

Reviewing files that changed from the base of the PR and between 643cbdb and 428f9b0.

📒 Files selected for processing (1)

• challenge-2/submissions/jim3/solution-template.go

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Walkthrough

Two new Go solution files are added: one for Challenge 19 with four exported slice utilities (FindMax, RemoveDuplicates, ReverseSlice, FilterEven) and a main demo; and one for Challenge 2 adding ReverseString(s string) string plus a main that reads input and prints the reversed string.

Changes

Cohort / File(s)	Summary
Challenge 19 Solution challenge-19/submissions/jim3/solution-template.go	New file adding four exported slice utilities: FindMax(numbers []int) int, RemoveDuplicates(numbers []int) []int, ReverseSlice(slice []int) []int, FilterEven(numbers []int) []int, plus a main demonstrating them.
Challenge 2 Solution challenge-2/submissions/jim3/solution-template.go	New file adding ReverseString(s string) string which reverses a string via rune-slice two-pointer swap, plus a main that reads one line from stdin and prints the reversed result.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related PRs

• Add solution for Challenge 19 by wgasparin #816: Adds the same Challenge-19 utilities (FindMax, RemoveDuplicates, ReverseSlice, FilterEven) and a main demo.
• Add solution for Challenge 19 by yz4230 #766: Adds identical slice-utility functions and demo for Challenge 19 in another submission folder.
• Add solution for Challenge 2 by fzzv #635: Adds a ReverseString implementation under Challenge 2 (same function/file-level change).

Poem

🐰 I hop through slices, keen and spry,
Finding max beneath the sky,
Duplicates scatter as I dash,
I flip and filter with a flash —
A tiny rabbit's codeful sigh.

🚥 Pre-merge checks | ❌ 3

❌ Failed checks (2 warnings, 1 inconclusive)

Check name	Status	Explanation	Resolution
Title check	⚠️ Warning	The title refers only to Challenge 19, but the changeset includes solutions for both Challenge 19 and Challenge 2, making it incomplete and partially misleading.	Update the title to reflect both challenges included, such as 'Add solutions for Challenge 2 and Challenge 19 by jim3' or 'Add multiple challenge solutions by jim3'.
Docstring Coverage	⚠️ Warning	Docstring coverage is 71.43% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.
Description check	❓ Inconclusive	No description was provided by the author, making it impossible to assess relevance to the changeset.	Add a pull request description explaining the changes, such as 'Adds solution implementations for Challenge 2 (ReverseString) and Challenge 19 (utility functions for slice operations)'.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

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[coderabbitai]

🧹 Nitpick comments (2)

challenge-19/submissions/jim3/solution-template.go (2)

10-12: Tighten the empty-slice comment in FindMax.

Line 11 says “or another default value”, but this challenge contract expects 0 specifically. Consider removing that phrase to avoid ambiguity.

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25-41: Optional: preallocate slice/map capacity to reduce reallocations.

You can reserve capacity from len(numbers) in RemoveDuplicates and FilterEven for a small allocation/perf improvement.

♻️ Suggested diff

 func RemoveDuplicates(numbers []int) []int {
 	if len(numbers) == 0 {
 		return []int{}
 	}
-	result := []int{}
-	seen := make(map[int]bool)
+	result := make([]int, 0, len(numbers))
+	seen := make(map[int]bool, len(numbers))
@@
 func FilterEven(numbers []int) []int {
-	result := make([]int, 0)
+	result := make([]int, 0, len(numbers))

Also applies to: 56-66

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 9ec79f85-6605-4dda-9d31-bdea65d9cfa8

📥 Commits

Reviewing files that changed from the base of the PR and between 6a002af and 643cbdb.

📒 Files selected for processing (1)

• challenge-19/submissions/jim3/solution-template.go