// Create an array of 1000 random intergers between 1 and 10000

var arrRandom = [];

for(var intCtr=0; intCtr<1000; intCtr++) {

  arrRandom.push(Math.floor(Math.random() * Math.floor(10000)));

}

​

function reduceCallback(accum, curr) {

    return accum+curr;

}

​

function doRedeuce(pArray) {

    return pArray.reduce(reduceCallback);

}

function doLoop(pArray) {

    var accum = 0;

    for(var intCtr=0; intCtr<pArray.length; intCtr++) {

        accum += pArray[intCtr];

    }

    return accum;

}

function doForEach(pArray) {

    var accum = 0;

    pArray.forEach(function(item) {

        accum += item;

    });

}