/*your preparation JavaScript code goes here

To execute async code during the script preparation, wrap it as function globalMeasureThatScriptPrepareFunction, example:*/

async function globalMeasureThatScriptPrepareFunction() {

    // This function is optional, feel free to remove it.

    // await someThing();

}

​

/*

findOutlier([1,3,5,7,9,11,13,15,2]);

findOutlier2([1,3,5,7,9,11,13,15,2]);

*/

​

function findOutlier(integers){

  odd = [];

  even = [];

  outlier = -1;

  for (let x = 0; x < integers.length; x++) {

    let num = integers[x]; 

    if(num % 2 === 0 || num === 0) {

      odd.push(num);

    } else {

      even.push(num);

    }

    if(integers.length - 1 === x) {

      outlier = Number((odd.length === 1) ? odd : even);

    }

  }

  return outlier;

}

​

function findOutlier2(int){

  var even = int.filter(a=>a%2==0);

  var odd = int.filter(a=>a%2!==0);

  return even.length==1? even[0] : odd[0];

}