3 lines
214 B
Erlang
3 lines
214 B
Erlang
letter_freq( Data ) ->
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Dict = lists:foldl( fun (Char, Dict) -> dict:update_counter( Char, 1, Dict ) end, dict:new(), Data ),
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[io:fwrite( "~p : ~p~n", [[X], dict:fetch(X, Dict)]) || X <- dict:fetch_keys(Dict)].
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