{}
const users = [
{ name: "Alice", age: 30, active: true },
{ name: "Bob", age: 25, active: false },
{ name: "Charlie", age: 35, active: true },
{ name: "Diana", age: 28, active: true },
{ name: "Eve", age: 22, active: false },
];
const active = users
.filter(u => u.active)
.sort((a, b) => a.name.localeCompare(b.name));
console.log(active.map(u => u.name).join(", "));
const avg = active.reduce((sum, u) => sum + u.age, 0) / active.length;
console.log(`Průměrný věk: ${avg}`);