Add solution for Challenge 6 by shansing

[shansing]

Challenge 6 Solution

Submitted by: @shansing
Challenge: Challenge 6

Description

This PR contains my solution for Challenge 6.

Changes

• Added solution file to challenge-6/submissions/shansing/solution-template.go

Testing

• Solution passes all test cases
• Code follows Go best practices

Thank you for reviewing my submission! 🚀

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📥 Commits

Reviewing files that changed from the base of the PR and between 0b993d8 and f12b719.

📒 Files selected for processing (1)

• challenge-6/submissions/shansing/solution-template.go

Walkthrough

The PR introduces a new CountWordFrequency function in the challenge6 package that processes input text by extracting word-like tokens using regex, normalizing them to lowercase, removing apostrophes, and returning a frequency map.

Changes

Cohort / File(s)	Summary
Word Frequency Counter challenge-6/submissions/shansing/solution-template.go	Added new CountWordFrequency(text string) map[string]int function that tokenizes input text using regex, normalizes words to lowercase, strips apostrophes, and returns a map counting word occurrences.

Possibly related PRs

• #1109: Adds identical CountWordFrequency function to package challenge6 with the same normalization and frequency-counting logic.
• #1198: Implements the same CountWordFrequency function in challenge6 that tokenizes and counts word frequencies with similar text normalization.
• #841: Adds an implementation of CountWordFrequency in challenge6 with regex-based tokenization and word-frequency counting logic.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

Poem

🐰 A function hops into the fold,

Counting words both new and old,

Regex strips away the clutter bright,

Words lowercase, normalized just right! ✨

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately describes the main change: adding a solution for Challenge 6 submitted by shansing, which aligns with the changeset.
Description check	✅ Passed	The description is directly related to the changeset, explaining the Challenge 6 solution submission and clearly referencing the file added.
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%.

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

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Actionable comments posted: 1

🧹 Nitpick comments (1)

challenge-6/submissions/shansing/solution-template.go (1)

24-24: Consider compiling regex at package level for efficiency.

regexp.MustCompile is called on every function invocation. For a challenge solution this is fine, but in production code the compiled regex would typically be a package-level variable to avoid repeated compilation overhead.

♻️ Optional refactor

var wordRegex = regexp.MustCompile(`[\w']+`)

func CountWordFrequency(text string) map[string]int {
	countMap := make(map[string]int)
	words := wordRegex.FindAllString(text, -1)
	// ...
}

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ℹ️ Review info

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between a7ac764 and 0b993d8.

📒 Files selected for processing (1)

• challenge-6/submissions/shansing/solution-template.go