Difference between revisions of "FP Laboratory 3"
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| Line 1: | Line 1: | ||
| + | == Usage of lists == | ||
| + | |||
| + | Find out the results of the following operations: | ||
| + | <syntaxhighlight lang="Haskell"> | ||
| + | [3,2,1] > [2,1,0] | ||
| + | [3,2,1] > [2,10,100] | ||
| + | [3,4,2] > [3,4] | ||
| + | [3,4,2] > [2,4] | ||
| + | [3,4,2] == [3,4,2] | ||
| + | </syntaxhighlight> | ||
| + | |||
== Simple functions working with list == | == Simple functions working with list == | ||
| − | |||
Implement following functions: | Implement following functions: | ||
* Create a function that computes length of a list. | * Create a function that computes length of a list. | ||
| Line 10: | Line 20: | ||
* Create a function that returns the last element in the list. | * Create a function that returns the last element in the list. | ||
<syntaxhighlight lang="Haskell">getLast :: [a] -> a</syntaxhighlight> | <syntaxhighlight lang="Haskell">getLast :: [a] -> a</syntaxhighlight> | ||
| + | * Create a function that checks if an element is a member of the list. | ||
| + | <syntaxhighlight lang="Haskell">isElement :: a -> [a] -> Bool</syntaxhighlight> | ||
* Create a function that returns the list without the first element. | * Create a function that returns the list without the first element. | ||
<syntaxhighlight lang="Haskell">getTail :: [a] -> [a]</syntaxhighlight> | <syntaxhighlight lang="Haskell">getTail :: [a] -> [a]</syntaxhighlight> | ||
Revision as of 11:01, 17 September 2019
Usage of lists
Find out the results of the following operations:
[3,2,1] > [2,1,0]
[3,2,1] > [2,10,100]
[3,4,2] > [3,4]
[3,4,2] > [2,4]
[3,4,2] == [3,4,2]
Simple functions working with list
Implement following functions:
- Create a function that computes length of a list.
length :: [a] -> Int
- Create a function that sums the list of integers.
sumIt :: [Int] -> Int
- Create a function that returns the first element in the list.
getHead :: [a] -> a
- Create a function that returns the last element in the list.
getLast :: [a] -> a
- Create a function that checks if an element is a member of the list.
isElement :: a -> [a] -> Bool
- Create a function that returns the list without the first element.
getTail :: [a] -> [a]
- Create a function that returns the list without the last element.
getInit :: [a] -> [a]
- Create a function that merge two lists into one list.
combine :: [a] -> [a] -> [a]
- Create a function that reverse a list.
reverse :: [a] -> [a]
- Create a function that merge two lists into one list.
combine :: [a] -> [a] -> [a]
- Create a function that product scalar multiplication if two vectors.
scalar :: [Int] -> [Int] -> Int
