Math - Symmetric Difference

Part of the Logic & Flow section of Coddy's JavaScript journey — lesson 39 of 65.

The symmetric difference of two sets A and B is a new set that contains elements that are in either A or B, but not in both. It can be thought of as the union of A - B and B - A.

For example:

const set1 = new Set(arr1);
const set2 = new Set(arr2);

// Create symmetric difference
const symmetricDiff = new Set([
  ...set1.difference(set2),
  ...set2.difference(set1)
]);

// Convert back to array
const result = Array.from(symmetricDiff);

Challenge

Easy

Create a function called efficientSymmetricDifference that takes two arrays as parameters: arr1 and arr2. The function should convert the arrays to sets. Create a new Set that is the symmetric difference of the two input Sets, convert it to array and return the array

Try it yourself

function efficientSymmetricDifference(arr1, arr2) {
    const set1 = new Set(arr1)
    const set2 = new Set(arr2)
    const symDiff = new Set();
    // Write your code here


    return Array.from(symDiff);

}