1.
def longest_word(list):
    longword = max(list, key=len)
    print("Longest word : ",longword)
    print("Length of longest word : ",len(longword))


input_string = input('Enter words of a list separated by space ')
print("\n")
user_list = input_string.split()
# call function
logestWord = longest_word(user_list);
Output:-
=======
Enter words of a list separated by space 
Apple Banana Watermelon


Longest word :  Watermelon
Length of longest word :  10
============================================================================
2.
def remove(string, n):  
      first = string[:n]   
      last = string[n+1:]  
      return first + last
string=input("Enter the sring:")
n=int(input("Enter the index of the character to remove:"))
print("Modified string:")
print(remove(string, n))

Output :-
=========   
Enter the sring:
Apple
Enter the index of the character to remove:
2
Modified string:
Aple

==============================================================================
3.
def lastPartString(tstring,specChar):
    print(tstring.rsplit(specChar, 1)[0])

tstring = input("Please enter string for testing :")
tposition = input("Please enter specified characher:")
lastPartString(tstring,tposition)
output:-
========   
Please enter string for testing :
Data science - class
Please enter specified characher:
-
Data science 
==============================================================================
4.
Original_Array = ["Python", "Julia", "Go", "MATLAB", "SPSS", "R", "C"]
 # Printing original array
print ("The original array: ",Original_Array)
 # sorting words in dictionary order
Original_Array.sort()
 # printing original array after sorting
print ("Sorted array: ",Original_Array) 

Output:-
========   
The original array:  ['Python', 'Julia', 'Go', 'MATLAB', 'SPSS', 'R', 'C']
Sorted array:  ['C', 'Go', 'Julia', 'MATLAB', 'Python', 'R', 'SPSS']
================================================================================
5.

string = '   My son name is Jatin Krishna.    '
 
print(f'String =\'{string}\'')
 
print(f'After Removing Leading Whitespaces String =\'{string.lstrip()}\'')
 
print(f'After Removing Trailing Whitespaces String =\'{string.rstrip()}\'')
 
print(f'After Trimming Whitespaces String =\'{string.strip()}\'')
Output:-
========

String ='   My son name is Jatin Krishna.    '
After Removing Leading Whitespaces String ='My son name is Jatin Krishna.    '
After Removing Trailing Whitespaces String ='   My son name is Jatin Krishna.'
After Trimming Whitespaces String ='My son name is Jatin Krishna.'
=============================================================