Check out example codes for "get waht is differnt between two arrays c#". It will help you in understanding the concepts better.
Code Example 1
//get whats in array 2 but not array 1 - array2.Except(array1) //get whats in array 1 but not array 2 - array1.Except(array2) //get what is in both array 1 and array 2 - array1.Intersect(array2)
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