const array1 = [[0, 1], [2, 3], [4, 5]].reduceRight(
(accumulator, currentValue) => accumulator.concat(currentValue)
);
console.log(array1);
// expected output: Array [4, 5, 2, 3, 0, 1]
const array1 = [[0, 1], [2, 3], [4, 5]].reduceRight( (accumulator, currentValue) => accumulator.concat(currentValue));console.log(array1);// expected output: Array [4, 5, 2, 3, 0, 1]