w3resource

Python: Remove all consecutive duplicates of a given string

Python String: Exercise-67 with Solution

Write a Python program to remove all consecutive duplicates of a given string.

Visual Presentation:

Python String: Remove all consecutive duplicates of a given string.

Sample Solution - 1:

Python Code:

# Import groupby from itertools
from itertools import groupby 

# Function to remove consecutive duplicates
def remove_all_consecutive(str1):
  
  # Initialize empty result string
  result_str = []

  # Group string into consecutive characters
  for (key,group) in groupby(str1):
    
    # Append only one instance of each character
    result_str.append(key)

  # Join characters into string  
  return ''.join(result_str)

# Test string
str1 = 'xxxxxyyyyy'

# Print original string
print("Original string:" + str1)

# Print string to modify 
print("After removing consecutive duplicates:")

# Print modified string
print(remove_all_consecutive(str1)) 

Sample Output:

Original string:xxxxxyyyyy
After removing consecutive duplicates: xxxxxyyyyy
xy

Flowchart:

Flowchart: Remove all consecutive duplicates of a given string

Visual Presentation:

Python String: Remove all consecutive duplicates of a given string.

Sample Solution - 2:

Python Code:

# Import itertools
import itertools

# Function to remove consecutive duplicates
def remove_consecutive_duplicates(s1):

  # Group into consecutive characters 
  # Keep only first instance of each
  return ''.join(i for i, _ in itertools.groupby(s1))

# Test string  
s1= "aabcdaee"

# Print original string
print("Original String: ",s1)  

# Print message
print("\nRemoving all consecutive duplicates:")

# Print string with duplicates removed
print(remove_consecutive_duplicates(s1)) 

Sample Output:

Original String:  aabcdaee

Removing all consecutive duplicates:
abcdae

Flowchart:

Flowchart: Remove all consecutive duplicates of a given string

Python Code Editor:

Previous: Write a Python program to make two given strings (lower case, may or may not be of the same length) anagrams removing any characters from any of the strings.
Next: Write a Python program to create two strings from a given string. Create the first string using those character which occurs only once and create the second string which consists of multi-time occurring characters in the said string.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.



Become a Patron!

Follow us on Facebook and Twitter for latest update.

It will be nice if you may share this link in any developer community or anywhere else, from where other developers may find this content. Thanks.

https://198.211.115.131/python-exercises/string/python-data-type-string-exercise-67.php