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Add initial implementation fo UE2 A.4

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This commit is contained in:
Ivaylo Ivanov 2021-10-28 22:46:14 +02:00
parent 31f88280e4
commit cc4469a5c1
1 changed files with 16 additions and 8 deletions
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24
code/Angabe2.hs
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@ -318,11 +318,14 @@ calculate_time_diff u1 u2 =
-- Aufgabe A.3
{- Knapp, aber gut nachvollziehbar geht einzulassende folgendermassen vor:
...
{-
loop through the list of people
if the head is allowed, convert to string and add it to the result list, call the function recursively with the tail of the list
if the head is not allowed, call the function recursively with the tail of the list
when the tail is empty, terminate
-}
einzulassende :: Einlassbegehrende -> Regel -> Kontrollzeitpunkt -> Einzulassende
einzulassende :: Einlassbegehrende -> Regel -> Kontrollzeitpunkt -> Einzulassend
einzulassende p r k = allowed_people p r k []
allowed_people :: Einlassbegehrende -> Regel -> Kontrollzeitpunkt -> [VorUndNachname] -> Einzulassende
@ -331,14 +334,19 @@ allowed_people (p:ps) r k res
| (einzulassen (p, r, k)) == Einlassen = allowed_people ps r k (res ++ [person_to_string p])
| otherwise = allowed_people ps r k res
disallowed_people :: Einlassbegehrende -> Regel -> Kontrollzeitpunkt -> [VorUndNachname] -> Einzulassende
disallowed_people (p:ps) r k res
| ps == [] = res
| (einzulassen (p, r, k)) == Abweisen = disallowed_people ps r k (res ++ [person_to_string p])
| otherwise = disallowed_people ps r k res
-- Aufgabe A.4
--einzulassende_abzuweisende :: Einlassbegehrende -> Regel -> Kontrollzeitpunkt -> ([Einzulassende],[Abzuweisende])
{- Knapp, aber gut nachvollziehbar geht einzulassende_abzuweisende folgendermassen vor:
...
{-
call the function from A.3 to calculate the allowed people, create a new function analogic to the one in A.3 but for disallowed people
-}
einzulassende_abzuweisende :: Einlassbegehrende -> Regel -> Kontrollzeitpunkt -> (Einzulassende,Abzuweisende)
einzulassende_abzuweisende p r k = ((einzulassende p r k), (disallowed_people p r k []))
-- Aufgabe A.5