def p_2_7():
myList = UnList()
myList.append(1)
myList.append(2)
myList.append(3)
myList.append(4)
myList.append(3)
myList.append(2)
myList.append(1)
# myListRevesed = myList
#
# myListRevesed.reverse()
#
# l1 = myList.traverse()
# l2 = myListRevesed.traverse()
#
# error = False
# for i in range( (len(l1) // 2) + 1 ):
# if l1[i] != l2[i]:
# error = True
# break
#
# print(not error)
print(myList.isPalindrome())
def p_2_6():
circ = UnList()
circ.append('A')
circ.append('B')
circ.append('C')
circ.append('D')
circ.append('E')
circ.append('C')
print(circ.findStartOfLoop())
return
def p_2_4():
myList = UnList()
myList.append(4)
myList.append(5)
myList.append(2)
myList.append(1)
myList.append(3)
myList.append(6)
X = 3
print('Before:')
print(*myList.traverse(), sep='--->')
myList.partition(X)
# myList.sort()
print("After:")
print(*myList.traverse(), sep='--->')
def p_2_1():
"""
Write code to remove duplicates from an unsorted linked list.
:return: void
"""
myList = UnList()
myList.append(1)
myList.append(3)
myList.append(2)
myList.append(1)
myList.append(4)
myList.append(2)
myList.append(3)
print('Before:')
print(*myList.traverse(), sep='--->')
myList.removeDuplicates()
print("After:")
print(*myList.traverse(), sep='--->')
def p_2_3():
myList = UnList()
myList.append(1)
myList.append(2)
myList.append(3)
myList.append(4)
myList.append(5)
myList.append(6)
myList.append(7)
# delete by position
deleted_node_pos = 3
# delete by node value
deleted_node = 8
print('Before:')
print(*myList.traverse(), sep='--->')
# myList.popByPos ( deleted_node_pos )
myList.remove(deleted_node)
print("After:")
print(*myList.traverse(), sep='--->')
def p_2_2():
myList = UnList()
myList.append(1)
myList.append(3)
myList.append(2)
myList.append(1)
myList.append(4)
myList.append(2)
myList.append(3)
k = 8
# get the size of list
list_len = myList.size()
nodes = []
for i in range(k, list_len + 1):
el = myList.findByPos(i)
if el < 0:
break
nodes.append(str(el))
print(*nodes, sep='--->') if nodes else print('No elemnts')
def p_2_5_v2(): # in normal order
num1 = UnList()
# use push function to put digit in the first of list.
num1.append(6)
num1.append(1)
num1.append(7)
# print('number 1:')
print(*num1.traverse(), sep='--->')
num2 = UnList()
# use push function to put digit in the first of list.
num2.append(2)
num2.append(9)
num2.append(5)
# print ( 'number 2:' )
print(*num2.traverse(), sep='--->')
# now we have two nubers in reversed order so firs of all get each number
# digits in one integer number
number1 = int("".join(map(str, num1.traverse())))
number2 = int("".join(map(str, num2.traverse())))
# print("=====================================")
#
# print(number1, number2)
#
s_n_1_2 = number1 + number2
# print("number1 + number 2 = " + str(s_n_1_2))
#
# now store it in linked list
result = UnList()
for digit in str(s_n_1_2):
result.append(digit)
print("Result:")
print(*result.traverse(), sep="--->")
def p_2_5_v1(): # in reversed order
num1 = UnList()
# use push function to put digit in the first of list.
num1.push(6)
num1.push(1)
num1.push(7)
# print('number 1:')
print(*num1.traverse(), sep='--->')
num2 = UnList()
# use push function to put digit in the first of list.
num2.push(2)
num2.push(9)
num2.push(5)
res = sum_lists(num1, num2)
li = []
while res:
li.append(str(res.getData()))
res = res.getNext()
print(*li, sep='--->')
# print ( 'number 2:' )
print(*num2.traverse(), sep='--->')
# now we have two nubers in reversed order so firs of all get each number
# digits in one integer number if we just leav as it traversed will be
# in wrong order like for 617 will be 716 so to reverse it use reversed
# function implmented in linked list class
# num1.reverse()
# num2.reverse()
# number1 = int( "".join(map(str, num1.traverse())) )
# number2 = int( "".join(map(str, num2.traverse())) )
#
# print("=====================================")
#
# print(number1, number2)
#
# s_n_1_2 = number1 + number2
# print("number1 + number 2 = " + str(s_n_1_2))
#
# # now store it in linked list reversed to be 912 ==> 219
# result = UnList()
# for digit in str(s_n_1_2):
# result.push(digit)
#
# print("Result:")
# print(*result.traverse(), sep="--->")
return