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Hw1 #33

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9c9d946
Add homework with custom Array List
N0ktis Mar 24, 2020
48cc9fc
Modified methods index, count, remove and __init__
N0ktis Mar 24, 2020
65a3cc6
Modified method append
N0ktis Mar 25, 2020
d4b7817
Modified method __len__
N0ktis Mar 25, 2020
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158 changes: 158 additions & 0 deletions hw1/Array_list.py
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Original file line number Diff line number Diff line change
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from array import array


class Array_list:
def __init__(self, *args):
if not args:
self.arr_type = None
self.data = None
elif (type(args[0]) == int):
for i in args:
if type(i) != int:
raise Exception("Wrong type of input data")
self.arr_type = type(args[0])
self.data = array('i', args)
elif (type(args[0]) == float):
for i in args:
if type(i) != float:
raise Exception("Wrong type of input data")
self.arr_type = type(args[0])
self.data = array('d', args)
elif (type(args[0]) == str):
for i in args:
if type(i) != str:
raise Exception("Wrong type of input data")
self.arr_type = type(args[0])
self.data = array('u', args)

def __iter__(self):
if self.data is not None:
for i in range(self.data.buffer_info()[1]):
yield self.data[i]

def __len__(self):
k = 0
if self.data is not None:
for i in self.data:
k += 1
return k
return 0

def __contains__(self, item):
if self.data is None:
raise Exception("Item does not exist")
elif type(item) != self.arr_type:
raise Exception("Wrong type of input data")
return item in self.data

def __getitem__(self, index):
if self.data is None:
raise Exception("Item does not exist")
elif index >= len(self.data):
raise Exception("Index out of range")
return self.data[index]

def __setitem__(self, index, item):
if self.data is None:
raise Exception("Item does not exist")
elif type(item) != self.arr_type:
raise Exception("Wrong type of input data")
elif index >= len(self.data):
raise Exception("Index out of range")
self.data[index] = item

def __reversed__(self):
if self.data is not None:
return self.data[::-1]

def __delitem__(self, index):
if self.data is None:
raise Exception("Index does not exist")
elif index >= len(self.data):
raise Exception("Index out of range")
del self.data[index]

def __iadd__(self, other):
if other.data is None:
return self
elif self.data is None:
self.arr_type = other.arr_type
self.data = other.data
return self
elif self.arr_type == type(other[0]):
self.data = self.data + other.data
return self
else:
raise Exception("Wrong type of input data")

def index(self, item):
if self.data is None:
raise Exception("Item does not exist")
elif type(item) != self.arr_type:
raise Exception("Wrong type of input data")
i = None
for i, k in enumerate(self.data):
if k == item:
return i
if i is None:
raise Exception("Item does not exist")

def count(self, item):
if self.data is None:
return 0
elif type(item) != self.arr_type:
raise Exception("Wrong type of input data")
i = 0
for k in self.data:
if k == item:
i += 1
return i

def append(self, item):
if self.data is None:
self.arr_type = type(item)
if (type(item) == int):
self.data = array('i', [item])
return
elif (type(item) == float):
self.data = array('d', [item])
return
elif (type(item) == str):
self.data = array('u', [item])
return
elif type(item) != self.arr_type:
raise Exception("Wrong type of input data")
else:
self.data = self.data + Array_list(item).data
return

def clear(self):
self.data = None
self.arr_type = None
return self

def extend(self, other):
return self.__iadd__(other)

def pop(self, index):
if self.data is None:
raise Exception("Item does not exist")
elif index >= len(self.data):
raise Exception("Index out of range")
x = self.data[index]
del self.data[index]
return x

def remove(self, item):
if self.data is None:
raise Exception("Item does not exist")
elif type(item) != self.arr_type:
raise Exception("Wrong type of input data")
else:
i = None
for i, k in enumerate(self.data):
if k == item:
self.pop(i)
return
if i is None:
raise Exception("Item does not exist")
81 changes: 81 additions & 0 deletions hw1/test.py
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Original file line number Diff line number Diff line change
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import Array_list

print("TEST INT")
arr_int_0 = Array_list.Array_list()
arr_int_1 = Array_list.Array_list(1, 2, 3, 2, 1)
arr_int_2 = Array_list.Array_list(11, 22, 33)

print(arr_int_1.index(3))
print(arr_int_1.count(2))
arr_int_1.append(999)
print(*arr_int_1.data)
arr_int_1.extend(arr_int_2)
print(*arr_int_1.data)
arr_int_1.pop(6)
print(*arr_int_1.data)
arr_int_1.remove(3)
print(*arr_int_1.data)
print(999 in arr_int_1)
arr_int_1 += arr_int_2
print(*arr_int_1.data)
print(len(arr_int_1))
print(arr_int_1[5])
arr_int_1[5] = 1488
print(*arr_int_1.data)
reversed(arr_int_1)
print(*reversed(arr_int_1))
arr_int_1.clear()
print(arr_int_1.data)

print()
print("TEST FLOAT")
arr_float_0 = Array_list.Array_list()
arr_float_1 = Array_list.Array_list(1.1, 2.2, 3.3, 1.1, 5.5)
arr_float_2 = Array_list.Array_list(0.1, 0.2, 0.3, 0.4)

print(arr_float_1.index(5.5))
print(arr_float_1.count(1.1))
arr_float_1.append(999.999)
print(*arr_float_1.data)
arr_float_1.extend(arr_float_2)
print(*arr_float_1.data)
arr_float_1.pop(2)
print(*arr_float_1.data)
arr_float_1.remove(0.2)
print(*arr_float_1.data)
print(999.1 in arr_float_1)
arr_float_1 += arr_float_2
print(*arr_float_1.data)
print(len(arr_float_1))
print(arr_float_1[4])
arr_float_1[4] = 4.20
print(*arr_float_1.data)
print(*reversed(arr_float_1))
arr_float_1.clear()
print(arr_float_1.data)

print()
print("TEST STR")
arr_str_0 = Array_list.Array_list()
arr_str_1 = Array_list.Array_list('a', 'b', 'c', 'a', 'a', 'a')
arr_str_2 = Array_list.Array_list('Z', 'Y', 'X')
print(arr_str_1.index('c'))
print(arr_str_1.count('a'))
arr_str_1.append('L')
print(*arr_str_1.data)
arr_str_1.extend(arr_str_2)
print(*arr_str_1.data)
arr_str_1.pop(6)
print(*arr_str_1.data)
arr_str_1.remove('a')
print(*arr_str_1.data)
print('Z' in arr_str_1)
arr_str_1 += arr_str_2
print(*arr_str_1.data)
print(len(arr_str_1))
print(arr_str_1[5])
arr_str_1[3] = '@'
print(*arr_str_1.data)
print(*reversed(arr_str_1))
arr_str_1.clear()
print(arr_str_1.data)