"use strict";

var arr = new Array(10000000);

var i;
for (i=0; i<arr.length; i++){
    arr[i]=i
}

var start = new Date().valueOf();

var sum=0;
for (i = arr.length-1; i >=0; i--) {
    sum += arr[i]
}

var end = new Date().valueOf();

console.log("The call took ",(end-start),"ms to run. Sum is ",sum,"\n");