// PRVI ZADATAK

const vowels = ['a', 'e', 'i', 'o', 'u'];
const example = "lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.";

function countVowels(string) {
    let count = 0;
    for (let i = 0; i < string.length; i++) {
        if (vowels.indexOf(string[i]) > -1) {
            count++;
        }
    }
    return count;
}

console.log(`There are ${countVowels(example)} vowels in the given string.`);

// DRUGI ZADATAK

const triplets = [
    [6, 2, 9],
    [31, 22, 12],
    [25, 10, 18],
    [34, 23, 19],
    [91, 50, 64],
    [10, 89, 35],
    [52, 31, 60],
    [14, 71, 28]
];

for (let i = 0; i < triplets.length; i++) {
    console.log(`The middle value of array [${triplets[i]}] is located at index ${gimme(triplets[i])}.`);
}

function gimme(array) {
    const clone = array.slice();
    clone.sort();
    const middle = clone[Math.round(clone.length - 1) / 2];
    return array.indexOf(middle);
}

// TRECI ZADATAK

const likers = [
    [],
    ['Mark'],
    ['Mark', 'Peter'],
    ['Mark', 'Peter', 'Jacob'],
    ['Mark', 'Peter', 'Jacob', 'Max'],
    ['Mark', 'Peter', 'Jacob', 'Max', 'Steve'],
    ['Mark', 'Peter', 'Jacob', 'Max', 'Steve', 'Angela'],
];

for (let i = 0; i < likers.length; i++) {
    console.log(likes(likers[i]));
}

function likes(array) {
    if (array && array.length) {
        switch (array.length) {
            case 1:
                return `${array[0]} likes this`;
            case 2:
                return `${array[0]} and ${array[1]} like this`;
            case 3:
                return `${array[0]}, ${array[1]} and ${array[2]} like this`;
            default:
                return `${array[0]}, ${array[1]} and ${array.length - 2} others like this`
        }
    } else {
        return 'No one likes this';
    }
}