Array Dominator Challenge from Dev.to. Try it yourself, here : https://dev.to/thepracticaldev/daily-challenge-220-what-dominates-your-array-19ne

Array Dominator Challenge

function dominator(arr) {
	
	const numCount = {};
	let dominator = -1;

	arr.some(elem => {

		if(!numCount[elem]) {
			numCount[elem] = 0;
		}

		if(++numCount[elem] > arr.length / 2) {
			dominator = elem;
			return true;
		}
	});

	return dominator;

}

console.log(dominator([2, 2, 2, 2, 3, 4, 5, 7, 2, 2,3]));
let randomArr = Array.from({length: 10}, () => Math.floor(Math.random() * 3));
console.log('Random array: ', randomArr);
console.log(dominator(randomArr));