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remdup predicate need hlep!
Implement a predicate remdup/2 which removes duplicate elements from a list, indexes the remaining elements (1 to n), and prints out how many elements there are. For example, ?- remdup([7,2,4,5,6,7,9,4],X). There are 6 elements in the list. X = [[1,7],[2,2],[3,4],[4,5],[5,6],[6,9]] !! the...
