/**
 * @param {number[]} numbers
 * @return {bool}
 */
var isContinuous= function(numbers) {
    if(!numbers.length) return false;
    const set = new Set();
    let min = 14, max = 0;
    for(let num of numbers){
        if(!num) continue;
        if(set.has(num)) return false;
        set.add(num);
        min = Math.min(min, num);
        max = Math.max(max, num);
    }

    return max - min < 5;
};