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map.py
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map.py
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from UnorderedList import UnorderedList
class Map () :
def __init__ (self) :
self.slots = UnorderedList ()
self.data = UnorderedList ()
def __setitem__ (self , key , value) :
if self.slots.search (key) :
index = self.slots.index (key)
self.data.insert (index , value)
self.data.pop (index + 1)
else :
self.slots.append (key)
self.data.append (value)
def __getitem__ (self , key) :
index = self.slots.index (key)
if (index == int ()) :
return "{} doesn't exist.".format (key)
values = self.data.head
for i in range (index) :
values = values.getNext ()
return values.getData ()
def __delitem__ (self , key) :
index = self.slots.index (key)
self.slots.pop (index)
self.data.pop (index)
def __str__ (self) :
if self.slots.isEmpty () :
return "{}"
else :
keys = self.slots.head
values = self.data.head
item_list = '{'
while keys != None :
item_list += str (keys.getData ()) + ": " + str (values.getData ())
if keys.getNext () != None :
item_list += ", "
else :
item_list += '}'
keys = keys.getNext ()
values = values.getNext ()
return item_list
def __len__ (self) :
return len (self.slots)
def __contains__ (self , key) :
return self.slots.search (key)