JSFiddle - React, Tailwind, and code Playground

by Eugen Sunic

JavaScript

const employees = [
  { name: "Jane Doe", department: "Engineering", salary: 90000 },
  { name: "John Smith", department: "HR", salary: 60000 },
  { name: "Emma Jones", department: "Engineering", salary: 95000 },
  { name: "James Brown", department: "Marketing", salary: 70000 },
  { name: "Emily Davis", department: "Engineering", salary: 85000 }
];

function calculateAverageSalary(employees) {
  const engineeringEmployees = employees.filter(employee => employee.department === "Engineering");

  const salaries = engineeringEmployees.map(employee => employee.salary);

  const averageSalary = salaries.reduce((acc, salary) => acc + salary, 0) / salaries.length;

  return averageSalary;
}

// Example usage:
const averageEngineeringSalary = calculateAverageSalary(employees);
console.log(`Average Engineering Salary: $${averageEngineeringSalary}`);

// sample pseudo code implementation

// way of thinking.. map concept 
// functional programming methods,
function groupByDepartment(employees) {

  return employees.reduce((acc, employee) => {
    if (!acc[employee.department]) {
      acc[employee.department] = [];
    }
    acc[employee.department].push(employee);
    return acc;
  }, {}); 
}

console.log(groupByDepartment(employees))