Description

For each function, there are some public test cases and some (hidden) private test cases.
“Compile and run” will evaluate your submission against the public test cases.
“Submit” will evaluate your submission against the hidden private test cases and report a score on 100. There are 15 private testcases in all, each with equal weightage.
Ignore warnings about “Presentation errors”.

1). Write a function intreverse(n) that takes as input a positive integer n and returns the integer obtained by reversing the digits in n.

Here are some examples of how your function should work.

>>> intreverse(783)
387
>>> intreverse(242789)
987242
>>> intreverse(3)
3
2). Write a function matched(s) that takes as input a string s and checks if the brackets “(” and “)” in s are matched: that is, every “(” has a matching “)” after it and every “)” has a matching “(” before it. Your function should ignore all other symbols that appear in s. Your function should return True if s has matched brackets and False if it does not.

Here are some examples to show how your function should work.

>>> matched(“zb%78”)
True
>>> matched(“(7)(a”)
False
>>> matched(“a)*(?”)
False
>>> matched(“((jkl)78(A)&l(8(dd(FJI:),):)?)”)
True
3). Write a function sumprimes(l) that takes as input a list of integers l and retuns the sum of all the prime numbers in l.

Here are some examples to show how your function should work.

>>> sumprimes([3,3,1,13])
19
>>> sumprimes([2,4,6,9,11])
13
>>> sumprimes([-3,1,6])
0

Sample Test Cases
Input
Output

Test Case 1 intreverse(368)
863

Test Case 2 intreverse(798798) 897897

Test Case 3 intreverse(7)
7

Test Case 4 matched(“(7)(a”)
False

Test Case 5 matched(“a)*(?”)
False

Test Case 6
matched(“((jkl)78(A)&l(8(dd(FJI:),):)?)”)
True

Test Case 7 sumprimes([17,51,29,39])
46

Test Case 8 sumprimes([-3,-5,3,5])
8

Test Case 9 sumprimes([4,6,15,27])
0

Test Case 10 intreverse(31511)
11513

Test Case 11
intreverse(4)
4

Test Case 12 intreverse(15135324234235)
53243242353151

Test Case 13
matched(“a3qw3;4w3(aasdgsd)((agadsgdsgag)agaga)”)
True

Test Case 14
matched(“(ag(Gaga(agag)Gaga)GG)a)33)cc(“)
False

Test Case 15 matched(“(adsgdsg(agaga)a”)
False

Test Case 16 matched(“15ababa.agaga[][[[“)
True

Test Case 17 sumprimes([101,93,97,44])
198

Test Case 18 sumprimes([1001,393,743,59])
802

Test Case 19
sumprimes([11,11,11,13,11,-11])
57