Programming, Data Structures And Algorithms Using Python - Week 2 Programming Assignment Jul-Dec 2022

  NPTEL PROGRAMMING ASSIGNMENTS

Programming, Data Structures And Algorithms Using Python

Week 2 Programming Assignment

Due on 2022-08-11, 23:59 IST

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.



Function:

intreverse(125)

Expected Output:
521

Function:

intreverse(25444)

Expected Output:
44452

Function:

intreverse(5)

Expected Output:
5

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 as matched brackets and False if it does not.

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



Function:
matched("zb%78")

Expected Output:

True

Function:
matched("(b(78")

Expected Output:

False

Function:
matched("((b)7kl448)")

Expected Output:

True

3. Write a function sumprime(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.



Function:
sumprimes([3, 3, 1, 13])

Expected Output:

19

Function:
sumprimes([1, 2, 5, 8])

Expected Output:

7

Function:
sumprimes([-3, 1, 6])

Expected Output:

0

--Solution-- 

  def intreverse(n): a=int(str(n)[::-1]) return a def matched(p): c=0 for t in p: if(t=='('): c+=1 if(t==')'): c-=1 if(c==-1): return False if(c==0): return True return False def sumprimes(l): sump=0 for i in l: cou=0 for j in range(1,i+1): if(i%j==0): cou+=1 if(cou==2): sump+=i return sump