Finding the symmetric difference

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Describe your issue in detail here
hello i would like to me help in find the symmetric difference

  **Your code so far**
function sym(args) {
return args;

sym([1, 2, 3], [5, 2, 1, 4]);
  **Your browser information:**

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/ Safari/537.36

Challenge: Find the Symmetric Difference

Link to the challenge:

What have you tried so far?

I have no idea of where to start with or start from

Well, what’s the symmetric difference of two arrays? If you have two sets of numbers , like




what’s the symmetric difference?

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