function arrayManipulator(theArray){
    console.log(theArray);
    var processedArray = theArray.filter(function(element){
        var debugOne = (element === 0);
        var debugTwo = (isNaN(element)===false);
        var debugThree = element === 0 || isNaN(element)===false;
        if(/*typeof element == 'number' ||*/ element === 0 || isNaN(element)===false){
            return element;
        }
    });



    console.log(processedArray);//////////////////////////////expected [0,2] but is [2]

    Array.prototype.max = function(){
        return Math.max.apply(null, this);
    };

    Array.prototype.min = function(){
        return Math.min.apply(null, this);
    };

    console.log("Max number:");
    console.log(processedArray.max());
    console.log("Min number:");
    console.log(processedArray.min());

    Array.prototype.frequentElement = function(){
        if(this.length == 0){
            return null;
        }
        var tempMap = {};
        var maxElement = this[0];
        var maxCount = 1;
        for(var i = 0; i < this.length; i++)
        {
            var tempElement = this[i];

            if(tempMap[tempElement] == null){
                tempMap[tempElement] = 1;
            }

            else{
                tempMap[tempElement]++;
            }

            if(tempMap[tempElement] > maxCount)
            {
                maxElement = tempElement;
                maxCount = tempMap[tempElement];
            }
        }
        return maxElement;
    }

    console.log("Most frequent number:");
    console.log(processedArray.frequentElement());
    console.log("Sorted descending array:");
    processedArray.sort(function(a, b){return b-a});

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

}

//arrayManipulator(["Pesho", 2, "Gosho", 12, 2, "true", 9, undefined, 0, "Penka", { bunniesCount : 10}, [10, 20, 30, 40]]);

arrayManipulator([0, 2, "test"]);