Quescol

class Node:
    def __init__(self, data):
	    self.data = data
	    self.next = None

class Singlylinkedlist:
    def __init__(self):
        self.head = None

    def push_first(self, new_element):

Quescol

#Creating node class of the singly linked list  
class Node:
    def __init__(self, data):
       self.data = data
       self.next = None
 
class SinglyLinkedList:
    def __init__(self):
        self.head = None
        self.tail = None

Quescol

#taking input from the user
string = input("Enter the string : ")
#converting string into list of its characters
strList=list(string) 
#sorting elements of list
sortedString=''.join(sorted(strList)) 
print("String Sorted in ascending order :", sortedString)

Quescol

#taking input from the user
str1 = input('Enter a string: ')
result=""
#iterating the characters of string
for i in str1:
    count = 0
    #another loop inside loop
    for j in str1:
	    if i == j:
	        count=count+1

Quescol

str1 = input('Enter a string: ')
sum=0
for i in string:
	#if character is a digit
    if i.isdigit():
		#taking sum of integral digits present in the string 
        sum=sum+int(i)
print("sum=",sum)

Quescol

str1 = input('Enter a string: ')
#converting the characters of string into a set elements to remove dublicacy.
#use join() function to join all the remaining set elements together.
result="".join(dict.fromkeys(str1))
print(result)

Quescol

#taking inputs from the user
str1 = input('Enter first string: ')
str2 = input('Enter second string: ')
#printing the output after using join() method
print("String after concatenation :","".join([str1, str2]))

Quescol

#taking input from the user
	str1 = input('Enter first string: ')
str2 = input('Enter second string: ')
#using string concatenation method ‘+’
str3 = str1 + str2
print("String after concatenation :",str3)

Quescol

#taking two strings as the input from the user
str1 = input('Enter first string: ')
str2 = input('Enter second string: ')
#comparing two strings
if str1== str2:
    		print("The strings are the same")
else:
    print("The strings are not same") 

Quescol

#taking input from the user
string = input("Enter a String : ")
result=''
#iterating the string

for i in string:
    #if the character is an alphabet
    if i.isalpha():
        result += i
print("String after removing the spaces :",result)