25 lines
745 B
Haskell
25 lines
745 B
Haskell
-- USING MAP, convert a list of Strings to a list of Integers.
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stringsToNums :: [String] -> [Integer]
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-- USING MAP, take a list of integers and return a list with
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-- the equivalent absolute values.
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-- USING ZIPWITH, concatenate a list of first names with
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-- a list of last names to produce a list of full names.
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-- USING MAP AND FILTER, square all positive numbers in a list;
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-- strip out 0 and negative numbers.
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main :: IO ()
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main = do
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print $ stringsToNums []
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print $ stringsToNums ["1", "2", "3", "4", "5"]
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print $ mapAbsVal [-4, 3, 2, -99, 54]
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print $ mapAbsVal $ stringsToNums ["-4", "7", "-22"]
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print $ fullNames ["John", "Wes Happen", "Holly"] ["Smith", "Ng", "Wood"]
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print $ squarePostives [2, -3, 45, 5, 0, 7, -6]
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