wmi-parprog/08_Haskell/ex1-tutorial.hs

#!/usr/bin/env runhaskell

-- main = do
--   print [1..10]



-- fType :: Int -> Int -> Int 
-- fType x y = x*x + y*y
-- main = print (fType 2 4) 



-- fType :: Integer -> Integer -> Integer 
-- fType x y = x*x + y*y 
-- main = print (fType 212124454 44545454454554545454454454545445446382473284328943648726487623784623786478235472678654358436857348573947854454545445455454545445445454544544638247328432894364872648762378462378647823547267865435843685734857394785) 



-- fact :: Integer -> Integer 
-- fact n | n == 0 = 1 
--        | n /= 0 = n * fact (n-1) 
-- main = do 
--   putStrLn "The factorial of 5 is:"  
--   print (fact 5) 



-- roots :: (Float, Float, Float) -> (Float, Float)  
-- roots (a,b,c) = (x1, x2) where 
--    x1 = e + sqrt d / (2 * a) 
--    x2 = e - sqrt d / (2 * a) 
--    d = b * b - 4 * a * c  
--    e = - b / (2 * a)  
-- main = do 
--    putStrLn "The roots of our Polynomial equation are:" 
--    print (roots(1,-8,6))



-- import Data.Char  
-- import Prelude hiding (map) 

-- map :: (a -> b) -> [a] -> [b] 
-- map _ [] = [] 
-- map func (x : abc) = func x : map func abc  
-- main = print $ map toUpper "tutorialspoint.com" 



-- main = do 
--    putStrLn "The successor of 4 is:"  
--    print ((\x -> x + 1) 4)



-- main = do 
--    let x = [1..10]   
--    putStrLn "Our list is:"  
--    print (x) 
--    putStrLn "The first element of the list is:" 
--    print (head x)
--    putStrLn "The tail of our list is:" 
--    print (tail x) 
--    putStrLn "The last element of our list is:" 
--    print (last x)
--    putStrLn "Our list without the last entry:"  
--    print (init x) 
--    putStrLn "Is our list empty?"  
--    print (null x)
--    putStrLn "The list in Reverse Order is:" 
--    print (reverse x)
--    putStrLn "The length of this list is:" 
--    print (length x)
--    print(take 5 ([1 .. 10])) 
--    print(drop 5 ([1 .. 10])) 
--    putStrLn "The maximum value element of the list is:"  
--    print (maximum x) 
--    putStrLn "The minimum value element of the list is:"  
--    print (minimum x)
--    putStrLn "The summation of the list elements is:" 
--    print (sum x)
--    putStrLn "The multiplication of the list elements is:" 
--    print (product x) 
--    putStrLn "Does it contain 786?" 
--    print (elem 9 (x))



-- doubleListA [] = []
-- doubleListA (x:xs) = 2*x : doubleListA xs
-- tripleListB [] = []
-- tripleListB (x:xs) = 3*x : tripleListB xs
-- multList n [] = []
-- multList n (x:xs) = n*x : multList n xs
-- tripleList = multList 3
-- doubleList = multList 2
-- main = do 
--  let x = [1..10] 
--  putStrLn "Our list is:"
--  print (x) 
--  print (doubleListA x)
--  print (doubleList x)



eveno :: Int -> Bool 
noto  :: Bool -> String 

eveno x = if x `rem` 2 == 0 
   then True 
else False 
noto x = if x == True 
   then "This is an even Number" 
else "This is an ODD number" 

main = do 
   putStrLn "Example of Haskell Function composition" 
   print ((noto.eveno)(16))



-- import Data.List  
-- main = do  
--    putStrLn("Different methods of List Module") 
--    print(intersperse '.' "Tutorialspoint.com") 
--    print(intercalate " " ["Lets","Start","with","Haskell"]) 
--    print(splitAt 7 "HaskellTutorial") 
--    print (sort [8,5,3,2,1,6,4,2])