/* Write a JavaScript program to find the most frequent element in an array and return it.

Example Input: [3, 5, 2, 5, 3, 3, 1, 4, 5] Example Output: 3 */

const findMostFrequent = arrayOfNums => {

const frequency = {};

arrayOfNums.map(element => frequency[element] = frequency[element] + 1 || 1);

const allNumbers = Object.keys(frequency);

const NumbersRepetition = Object.values(frequency);

const maxFrequentValue = Math.max(...NumbersRepetition);

const maxFrequentsIndex = NumbersRepetition.findIndex ( x => x === maxFrequentValue);

const mostFrequentElement = allNumbers[maxFrequentsIndex];

return mostFrequentElement;

}

console.log(findMostFrequent([3, 5, 2, 5, 3, 3, 1, 4, 5]));