Add solution for Challenge 3 by Huansock

[Huansock]

Challenge 3 Solution

Submitted by: @Huansock
Challenge: Challenge 3

Description

This PR contains my solution for Challenge 3.

Changes

• Added solution file to challenge-3/submissions/Huansock/solution-template.go

Testing

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

Thank you for reviewing my submission! 🚀

[coderabbitai]

Walkthrough

A new Go program defining Employee and Manager types with in-memory employee management. The Manager type provides methods to add, remove, find, and calculate average salary of employees. A main function demonstrates typical usage patterns including employee addition, removal, and lookups.

Changes

Cohort / File(s)	Summary
Employee Manager Solution challenge-3/submissions/Huansock/solution-template.go	Adds Employee struct with ID, Name, Age, Salary fields; Manager struct with slice of employees; methods to add/remove employees, calculate average salary, and find employee by ID; includes demo main function.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related PRs

• #1099: Implements identical Employee and Manager types with the same set of methods (AddEmployee, RemoveEmployee, GetAverageSalary, FindEmployeeByID) in the same challenge-3 solution file.
• #1118: Adds near-identical Go implementations with Employee and Manager types and the same manager methods plus a similar main demonstration.
• #879: Implements the same Employee and Manager types and identical Manager methods in the challenge-3 solution file structure.

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately describes the main change: adding a solution file for Challenge 3 by the author Huansock.
Description check	✅ Passed	The description is directly related to the changeset, explaining the Challenge 3 solution submission with relevant details about the file location and testing claims.

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[github-actions]

🎉 Auto-merged!

This PR was automatically merged after 2 days with all checks passing.

Thank you for your contribution, @Huansock!