[JsConAp]

Blondinka,

function getRandArr(arr, range) {
    var tmp = {};
    for (var i = 0; i < range; i++) {
        arr.push(Math.floor(Math.random() * (range + 1)));
    }

    for (var i = 0; i < arr.length; i++) {
        tmp[arr[i] + '.'] = 1;
    }
    if (Object.keys(tmp).length !== range) {
        for (var i = 0; i < arr.length; i++) {
            var newItem = Math.floor(Math.random() * (range + 1));
            tmp[(arr[i] + newItem) + '.'] = 1
        }
    }

    arr = Object.keys(tmp), count = arr.length;
    while (count > range) {
        count--;
        arr.splice(count, 1);
    }

    arr = arr.join('').split('.');
    arr.pop();
    return arr;
}
alert(getRandArr([], 100));