Question
Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases. Example: A man, a plan, a canal: Panama is
Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases.
Example:
"A man, a plan, a canal: Panama" is a palindrome.
"race a car" is not a palindrome.
Return 0 / 1 ( 0 for false, 1 for true ) for this problem
Please note that python code for above question should pass large test cases, and all corner test cases, reasoning for below MCQs is also needed, please dont copy (unhelpful if copied or didn't answer all)
1. Is the following Python code valid?
>>> a,b,c=1,2,3
>>> a,b,c
a) Yes, [1,2,3] is printed
b) No, invalid syntax
c) Yes, (1,2,3) is printed
d) 1 is printed
2. What will be the output of the following Python code?
a = ('check',)
n = 2
for i in range(int(n)):
a = (a,)
print(a)
a) Error, tuples are immutable
b)
(('check',),)
((('check',),),)
c) (('check',)'check',)
d)
(('check',)'check',)
((('check',)'check',)'check',)
3. Is the following Python code valid?
>>> a,b=1,2,3
a) Yes, this is an example of tuple unpacking. a=1 and b=2
b) Yes, this is an example of tuple unpacking. a=(1,2) and b=3
c) No, too many values to unpack
d) Yes, this is an example of tuple unpacking. a=1 and b=(2,3)
4. What will be the output of the following Python code?
>>> a=(1,2)
>>> b=(3,4)
>>> c=a+b
>>> c
a) (4,6)
b) (1,2,3,4)
c) Error as tuples are immutable
d) None
5. What will be the output of the following Python code?
>>> a,b=6,7
>>> a,b=b,a
>>> a,b
a) (6,7)
b) Invalid syntax
c) (7,6)
d) Nothing is printed
6. What will be the output of the following Python code?
>>> import collections
>>> a=collections.namedtuple('a',['i','j'])
>>> obj=a(i=4,j=7)
>>> obj
a) a(i=4, j=7)
b) obj(i=4, j=7)
c) (4,7)
d) An exception is thrown
7. Tuples can't be made keys of a dictionary.
a) True
b) False
8. Is the following Python code valid?
>>> a=2,3,4,5
>>> a
a) Yes, 2 is printed
b) Yes, [2,3,4,5] is printed
c) No, too many values to unpack
d) Yes, (2,3,4,5) is printed
9. What will be the output of the following Python code?
>>> a=(2,3,1,5)
>>> a.sort()
>>> a
a) (1,2,3,5)
b) (2,3,1,5)
c) None
d) Error, tuple has no attribute sort
10. Is the following Python code valid?
>>> a=(1,2,3)
>>> b=a.update(4,)
a) Yes, a=(1,2,3,4) and b=(1,2,3,4)
b) Yes, a=(1,2,3) and b=(1,2,3,4)
c) No because tuples are immutable
d) No because wrong syntax for update() method
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