/*
 * You probably know the "like" system from Facebook and other pages. 
 * People can "like" blog posts, pictures or other items. 
 * We want to create the text that should be displayed next to such an item.
 *
 * Implement the function which takes an array containing the names of people that like an item. 
 * It must return the display text as shown in the examples:
 *
 * []                                -->  "no one likes this"
 * ["Peter"]                         -->  "Peter likes this"
 * ["Jacob", "Alex"]                 -->  "Jacob and Alex like this"
 * ["Max", "John", "Mark"]           -->  "Max, John and Mark like this"
 * ["Alex", "Jacob", "Mark", "Max"]  -->  "Alex, Jacob and 2 others like this"
 *
 * Note: For 4 or more names, the number in "and 2 others" simply increases.
 */

function likes(names) {
  switch(names.length) {
    case 0:
      return "no one likes this";
    case 1:
      return `${names[0]} likes this`;
    case 2:
      return `${names[0]} and ${names[1]} like this`;
    case 3:
      return `${names[0]}, ${names[1]} and ${names[2]} like this`;
    default:
      return `${names[0]}, ${names[1]} and ${names.length - 2} others like this`;
  }
}

// Ejemplos de uso:
console.log(likes([]));                                // "no one likes this"
console.log(likes(["Peter"]));                         // "Peter likes this"
console.log(likes(["Jacob", "Alex"]));                 // "Jacob and Alex like this"
console.log(likes(["Max", "John", "Mark"]));           // "Max, John and Mark like this"
console.log(likes(["Alex", "Jacob", "Mark", "Max"]));  // "Alex, Jacob and 2 others like this"

// for me the best way

function likes(names) {
  return {
    0: 'no one likes this',
    1: `${names[0]} likes this`, 
    2: `${names[0]} and ${names[1]} like this`, 
    3: `${names[0]}, ${names[1]} and ${names[2]} like this`, 
    4: `${names[0]}, ${names[1]} and ${names.length - 2} others like this`, 
  }[Math.min(4, names.length)]
}