function solve() {

    return function(element, contents) {

        if (typeof element === 'string') {
            element = document.getElementById(element);
            if (element == null) {
                throw Error('element not found');
            }
        } else if (!(element instanceof HTMLElement) || contents == null || contents == undefined) {
            throw Error('invalid element');
        }

       for (i = 0; i < contents.length; i += 1) {
    if (typeof contents[i] !== 'string' && typeof contents[i] !== 'number') {
        throw Error('contents must contain ony numbers and strings');
    }
}

        //delete the element content
        element.textContent = '';
        //contents = [1,2,3,3,4,'tsvet'];

      for(i = 0; i < contents.length;i+=1){
         var newEl = document.createElement('div');
            newEl.textContent = contents[i];
            element.appendChild(newEl);
     }

    }
}