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Add solution for Challenge 3 by MaryNfs #1260

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Add solution for Challenge 3 by MaryNfs #1260

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68 changes: 68 additions & 0 deletions challenge-3/submissions/MaryNfs/solution-template.go
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Original file line number Diff line number Diff line change
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package main

import (
"fmt"
"slices"
)

type Employee struct {
ID int
Name string
Age int
Salary float64
}

type Manager struct {
Employees []Employee
}

func (m *Manager) AddEmployee(e Employee) {
m.Employees = append(m.Employees, e)
}

func (m *Manager) RemoveEmployee(id int) bool {
for i := range m.Employees {
if m.Employees[i].ID == id {
m.Employees = slices.Delete(m.Employees, i, i+1)
return true
}
}
return false
}

func (m *Manager) GetAverageSalary() float64 {
if len(m.Employees) == 0 {
return 0
}

var sum float64
for _, e := range m.Employees {
sum += e.Salary
}
return sum / float64(len(m.Employees))
}

func (m *Manager) FindEmployeeByID(id int) *Employee {
for i := range m.Employees {
if m.Employees[i].ID == id {
return &m.Employees[i]
}
}
return nil
}

func main() {
manager := Manager{}
manager.AddEmployee(Employee{ID: 1, Name: "Alice", Age: 30, Salary: 70000})
manager.AddEmployee(Employee{ID: 2, Name: "Bob", Age: 25, Salary: 65000})

manager.RemoveEmployee(1)

averageSalary := manager.GetAverageSalary()
employee := manager.FindEmployeeByID(2)

fmt.Printf("Average Salary: %f\n", averageSalary)
if employee != nil {
fmt.Printf("Employee found: %+v\n", *employee)
}
}
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