w3resource

Python: Create a new string with no duplicate consecutive letters from a given string

Python Basic - 1: Exercise-102 with Solution

Write a Python program to create a string with no duplicate consecutive letters from a given string.

Sample Solution:

Python Code:

# Define a function named no_consecutive_letters that takes a string (txt) as an argument.
def no_consecutive_letters(txt):
    # Return the first character of the string and join the characters where the current character is not equal to the previous character.
    # The expression txt[i] for i in range(1, len(txt)) if txt[i] != txt[i-1] iterates over the characters, excluding consecutive duplicates.
    return txt[0] + ''.join(txt[i] for i in range(1, len(txt)) if txt[i] != txt[i-1])

# Test the function with different strings and print the results.

# Test case 1
print(no_consecutive_letters("PPYYYTTHON"))

# Test case 2
print(no_consecutive_letters("PPyyythonnn"))

# Test case 3
print(no_consecutive_letters("Java"))

# Test case 4
print(no_consecutive_letters("PPPHHHPPP")) 

Sample Output:

PYTHON
Python
Java
PHP

Explanation:

Here is a breakdown of the above Python code:

  • Function definition:
    • The code defines a function named "no_consecutive_letters()" that takes a string (txt) as an argument.
  • Return Statement:
    • The function returns the first character of the string concatenated with the characters where the current character is not equal to the previous character.
  • Joining characters:
    • The "join()" method is used to concatenate characters where consecutive duplicates are excluded.

Pictorial Presentation:

Python: Create a new string with no duplicate consecutive letters from a given string.
Python: Create a new string with no duplicate consecutive letters from a given string.

Flowchart:

Flowchart: Python - Create a new string with no duplicate consecutive letters from a given string.

Python Code Editor:

Have another way to solve this solution? Contribute your code (and comments) through Disqus.

Previous: Write a Python program to find the name of the oldest student from a given dictionary containing the names and ages of a group of students.
Next: Write a Python program to check whether two given lines are parallel or not.

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/basic/python-basic-1-exercise-102.php