Python Codes

"""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
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
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"""
def intreverse(n):
    r=0
    temp=n
    while(temp>0):
        a=temp%10
        r=a+r*10
        temp=temp//10
    return (r)
def matched(str):
    count = 0
    for i in str:
        if i == "(":
            count += 1
        elif i == ")":
            count -= 1
        if count < 0:
            return False
    return count == 0
def sumprimes(n):
    sum=0
    fact=[]
    for i in range (0,len(n)):
        num=n[i]
        if num>1:
            fact=[]
            for j in range (1,num+1):
                if num%j==0:
                    fact=fact+[j]
        if fact==[1,num]:
            sum=sum+num
    return(sum)
import ast

def tolist(inp):
  inp = "["+inp+"]"
  inp = ast.literal_eval(inp)
  return (inp[0],inp[1])

def parse(inp):
  inp = ast.literal_eval(inp)
  return (inp)

fncall = input()
lparen = fncall.find("(")
rparen = fncall.rfind(")")
fname = fncall[:lparen]
farg = fncall[lparen+1:rparen]

if fname == "intreverse":
   arg = parse(farg)
   print(intreverse(arg))
elif fname == "matched":
   arg = parse(farg)
   print(matched(arg))
elif fname == "sumprimes":
   arg = parse(farg)
   print(sumprimes(arg))
else:
   print("Function", fname, "unknown")