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Articles by Akhil Sharma
Page 24 of 51
Haskell Program to Display Prime Numbers Between Intervals Using Function
In Haskell, we can Display Prime Numbers Between Intervals using user-defined function along with filter function and recursion. In the first example we are going to use user-defined, (isPrime) function with (primeInRange a b = filter isPrime [a..b] ) function and in the second example, we are going to use recursion with base and recursive case. Algorithm Step 1 − The Data.List library is imported. Step 2 − The user-defined isPrime function is defined as, Step 3 − Program execution will be started from main function. The main() function has whole control of the program. It is written as ...
Read MoreHaskell Program to Make a Simple Calculator Using switch...case
In this article we are going to learn how to make a simple calculator in Haskell using switch…case. In the first example, we are going to use case statements with different operators and in the second example, we are going to use map of functions as (fromList [('+', (+)), ('-', (-)), ('*', (*)), ('/', (/))]). Method 1: Program to make a simple calculator using case statement In this method, a simple calculator program in Haskell is formed which takes three arguments, x, op and y. The x and y are of type Double and op is of type Char. The ...
Read MoreHaskell Program to Display Factors of a Number
In Haskell, we can list comprehension, filter function and recursion to display factors of a number. In the first example we are going to use (factors n = [x | x n `mod` x == 0) [1..n]) function. And in third example, we are going to use recursion with base and recursive case. Algorithm Step 1 − The user-defined factors function is defined using internal functions. Step 2 − Program execution will be started from main function. The main() function has whole control of the program. It is written as main = do. Step 3 − The variable ...
Read MoreHaskell Program to Display Armstrong Numbers Between Intervals Using Function
Haskell has functions like higher order and filter, that can be used for getting the Armstrong number between two given internvals. In the first example we are going to use (isArmstrong and armstrongInRange function with higher order) and in the second example, we are going to use (filter isArmstrong [a..b]) function. Algorithm Step 1 − The user-defined isArmstrong function is defined. Step 2 − Program execution will be started from main function. The main() function has whole control of the program. It is written as main = do. Step 3 − The variables named, “lower” and “upper” are ...
Read MoreHaskell Program to get the Magnitude of the given number
Haskell has internal functions like negate, abs and signum functions that can be used to get magnitude of the given number. In the first example we are going to use (negate n) function and in the second example, we are going to use (abs) function. In third example, we are going to use (signum x) function. Algorithm Step 1 − Define the magnitude function Step 2 − Program execution will be started from main function. The main() function has whole control of the program. Step 3 − The variable named, “num” is being initialized. It will hold the number ...
Read MoreHaskell Program to convert int type variables to long
In Haskell, we can use internal functions like fromIntegral intToLong and toInteger function and toEnum to convert int type variable to long. In the first example, we are going to use (let longVar = fromIntegral intVar :: Int64) and in the second example, we are going to use (intToLong = toEnum) function. Algorithm Step 1 − The Data.Int module is imported. Step 2 − The program execution will be started from main function. The main() function has whole control of the program. Step 3 − The variable named, “intVar” is being initialized. It will hold the Int type variable ...
Read MoreHaskell Program to convert int type variables to char
In Haskell, we will convert int type variables to char by using user-defined function using chr function, toEnum function and list indexing. In the first example, we are going to use (intToChar I | i >= 0 && i = 0 && i = 0 && i = 0 && i Maybe Char intToChar i | i >= 0 && i putStrLn $ "The character value is " ++ [c] ++ "." Nothing -> putStrLn "Invalid input. Please enter an integer between 0 and 255." Output The character ...
Read MoreHaskell Program to create Case statement
In Haskell, we can use pattern matching, digitToInt, reads and a user-defined functions to convert char-type variables to int. In the first example, we are going to use cases for matching the pattern and in the second example, we are going to use (charToInt c = if isDigit c then Just (digitToInt c) else Nothing). And in third example, we are going to use (charToInt c = case reads [c] of [(x, "")] -> Just x and _ -> Nothing) function. Algorithm Step 1 − The internal function is defined Step 2 − Program execution will be started ...
Read MoreHaskell Program to convert Binary to Octal
In Haskell, we can use the user-defined function, Folder, reverse and helper function to convert binary to octal number. In the first example, we are going to use (binaryToOctal binary = showOct decimalValue "" where decimalValue = foldl (\acc x -> acc * 2 + digitToInt x) 0 binary) function. In the second example, we are going to use (binaryToOctal binary = showOct decimalValue "" where decimalValue = foldl (\acc x -> acc * 2 + digitToInt x) 0 binary octalDigits = reverse (octalHelper decimalValue) octalHelper n | n < 8 = [n] | otherwise = (n `mod` 8) : ...
Read MoreHaskell Program to Convert Boolean to String
In Haskell, we can convert Boolean to String by using user-defined function along with guards and if-else statements. In the first example, we are going to use (boolToString True = "True" and boolToString False = "False") function and in the second example, we are going to use (boolToString b | b = "True" | otherwise = "False") as function definition. And in the third example, we are going to use (boolToString b = if b then "True" else "False"). Algorithm Step 1 − Define the Boolean function Step 2 − Program execution will be started from main function. ...
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