// 22. Write a JavaScript program to compute the union of two arrays.

function union(arr1, arr2) {

const newArr = ([...arr1, ...arr2])

const uniqueArr = ([...new Set(newArr)])

return (uniqueArr)

}

console.log("Union of two Array is : ", union([1, 2, 3], [100, 2, 1, 10]));

// another method

function union1(arr1, arr2) {

const result = [];

const map = {}

arr1.forEach(element => {

if (!map[element]) {

map[element] = true;

result.push(element);

}

});

arr2.map((element) => {

if (!map[element]) {

map[element] = true;

result.push(element);

}

})

return result;

}

console.log("Union of two arrays is: ", union1([1, 2, 3], [100, 2, 1, 10]));