05. Neighborhoods js fundamentals

function solve(args) {
  const neighborhood = {};
  args.shift()
    .split(', ')
    .forEach((name) => neighborhood[name] = []);

  args.forEach((element) => {
    const [district, name] = element.split(' - ');

    if (Object.prototype.hasOwnProperty.call(neighborhood, district)) {
      neighborhood[district].push(name);
    }
  });

  const districtSortedByCount = Object.entries(neighborhood).sort((a, b) => b[1].length - a[1].length);

  districtSortedByCount.forEach((element) => {
    const [district, inhabitants] = element;

    console.log(`${district}: ${inhabitants.length}`);
    inhabitants.forEach((person) => {
      console.log(`--${person}`);
    });
  });
}