Question

Swap Cases

- Write a python program to swap cases. LowerCase letters to Upper

case and vice versa (10 points)

Input :

Www.PyDev.com

Output:

wWW.pYdEV.COM

Input: Pythonist 2

Output: pYTHONIST 2

b)

Manipulate Strings

- Insert a sequence of characters into the specified position in

the given String(10 points)

Input : First Line contains the string to be manipulated

Second Line contains the string to be inserted and the position Number

Output : The modified string

Sample Input & Output:-

Input : howyou

are 4

Output :howareyou

C)

Split And Join

- Given an input string split each word and then join the text using

specified join character(10 points)

Input : First Line - Contains a String

Second Line - Contains the split Character

Output: The modified String

Sample Input & Output:

Input :

hey how are you doing

-

Output:

hey-how-are-you-doing

Answer 1

# program to convert the uppercase character to lowercase and vice-versa

# read string input
in_str = input('Input: ')

# empty string to store the result
out_str = ''

# loop for all characters in the input string
for i in in_str:

  # convert lowercase to uppercase
  # and store result
  if i.islower():
    out_str += i.upper()

  # convert uppercase to uppercase
  # and store result
  elif i.isupper():
    out_str += i.lower()

  # if not a character add the character to result as it is
  else:
    out_str += i

# display resulted string
print('Output:', out_str)

# program to insert the string the at a certain position of the given string

# read string input
string = input('Input String: ')
in_str = input('Enter the string to insert: ')
in_pos = int(input('Enter the position to insert: '))

# empty string to store the result
out_str = ''

# loop for all characters in the input string
for i in range(len(string)):

  # insert the string at the desired position
  if i == (in_pos-1):
    out_str += in_str
    out_str += string[i]
  
  # else add the characters to result string
  else:
    out_str += string[i]

# display resulted string
print('Output:', out_str)

# program to perform split and join on a string input

# read string input and character to split
in_str = input('Input String: ')
split_char = input('Enter the string to insert: ')

# split the string entered
split_str = in_str.split()

# join the string using the character entered by user
join_str = split_char.join(split_str)

# display result
print('Output: ', join_str)

For help please comment.
Thank You