Retrieve similar elements in two different lists in ERLANG

If you need to compare 2 lists and take the similar or different elements can be done using the following simple method. Assume two lists as X and Y.

X = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10].

Y = [2, 4, 7, 20, 50, 100].

Z = X -- Y.      %% Returns you the values in X and Y which are dissimilar.

X -- Z   %% Returns you the values in X which are similar to values in Y.

Y -- Z   %% Returns you the values in Y which are similar to values in X.

Special thanks to Sisila@Sri Lanka