2020 - JS interview - interview solutions

// 1)
function findServer(servers, check) {
    const len = servers.length;
    if (len ==== ...) {

    }

    const srvIndex = len / 2;

    check(servers[srvIndex]).then(checkRes => {
        if (checkRes) {
            return findServer(servers.slice(srvIndex, len), check);
        } else {
            findServer(servers.slice(0, srvIndex), check)
            .then(findRes => {
                if (findRes) {

                }
            })
        }
    })
}


// 2)
let queue = [];

addToQueue(url, priority) {

}

async load(url, priority) {
    addToQueue(url, priority)

    ...

    const data = await loadData(url);

    removeFromQueue()
}


// 3)
camelToSnake(str) {
    if (typeof str !== 'string') {
        return str;
    }

    // Returns number[]
    const indexes = str.findIndexByRegex(/[A-Z]./)

    function updateS

    let res = str.splice(0, indexes[0]);
    if (indexes.length === 1) {

    }
    const len = indexes.length - 1;
    for(let index = 0; index < len; i++) {
        res += '_' str[index].toLowerCase() + str.splice(index + 1, indexes[index + 1]);
    }
}