Find the 2nd largest element in an array with minimum number of comparisons

Question

For an array of size N, what is the number of comparisons required?

Answer 1

function findSecondLargeNumber(arr){

    var fLargeNum = 0;
    var sLargeNum = 0;

    for(var i=0; i

Ref: http://www.ajaybadgujar.com/finding-second-largest-number-from-array-in-javascript/