reduceFor2D.js

const array = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11];

const twoDimensionArray2 = array.reduce((array, number, index) => {
	const criteria = 4;
	const arrayIndex = Math.floor(index / criteria);
	if (!array[arrayIndex]) {
		array[arrayIndex] = [];
	}
	array[arrayIndex] = [...array[arrayIndex], number];
	return array;
}, []);

console.log(array);
console.log(twoDimensionArray2);