Python Exercises: Replace repeated characters with single letters
Remove repeated consecutive chars.
Write a Python program to remove repeated consecutive characters and replace them with single letters and print a updated string.
Sample Data:
("Red Green White") -> "Red Gren White"
("aabbbcdeffff") -> "abcdef"
("Yellowwooddoor") -> "Yelowodor"
Sample Solution-1:
Python Code:
# Define a function to remove repeated consecutive characters in a string
# and replace them with a single occurrence of the character
def test(text):
# Initialize an empty list to store the result
result = []
# Iterate through each character in the input string
for x in text:
# Check if the result list is empty or the last character in the result is not equal to the current character
if not result or result[-1] != x:
# If true, append the current character to the result list
result.append(x)
# Join the characters in the result list to form the modified string
return ''.join(result)
# Initialize a string with repeated consecutive characters
text = "Red Green White"
print("Original string:", text)
# Print a message indicating the removal of repeated consecutive characters
print("Remove repeated consecutive characters and replace with the single letters:")
# Call the function to remove repeated consecutive characters and print the result
print(test(text))
# Repeat the process with a different string
text = "aabbbcdeffff"
print("\nOriginal string:", text)
# Print a message indicating the removal of repeated consecutive characters
print("Remove repeated consecutive characters and replace with the single letters:")
# Call the function to remove repeated consecutive characters and print the result
print(test(text))
# Repeat the process with another different string
text = "Yellowwooddoor"
print("\nOriginal string:", text)
# Print a message indicating the removal of repeated consecutive characters
print("Remove repeated consecutive characters and replace with the single letters:")
# Call the function to remove repeated consecutive characters and print the result
print(test(text))
Sample Output:
Original string: Red Green White Remove repeated consecutive characters and replace with the single letters: Red Gren White Original string: aabbbcdeffff Remove repeated consecutive characters and replace with the single letters: abcdef Original string: Yellowwooddoor Remove repeated consecutive characters and replace with the single letters: Yelowodor
Flowchart:
Sample Solution-2:
Python Code:
# Define a function to remove repeated consecutive characters in a string
# and replace them with a single occurrence of the character
def test(text):
# Use a generator expression to select characters based on the condition
return ''.join(text[i] for i in range(len(text)) if i == 0 or text[i - 1] != text[i])
# Initialize a string with repeated consecutive characters
text = "Red Green White"
print("Original string:", text)
# Print a message indicating the removal of repeated consecutive characters
print("Remove repeated consecutive characters and replace with the single letters:")
# Call the function to remove repeated consecutive characters and print the result
print(test(text))
# Repeat the process with a different string
text = "aabbbcdeffff"
print("\nOriginal string:", text)
# Print a message indicating the removal of repeated consecutive characters
print("Remove repeated consecutive characters and replace with the single letters:")
# Call the function to remove repeated consecutive characters and print the result
print(test(text))
# Repeat the process with another different string
text = "Yellowwooddoor"
print("\nOriginal string:", text)
# Print a message indicating the removal of repeated consecutive characters
print("Remove repeated consecutive characters and replace with the single letters:")
# Call the function to remove repeated consecutive characters and print the result
print(test(text))
Sample Output:
Original string: Red Green White Remove repeated consecutive characters and replace with the single letters: Red Gren White Original string: aabbbcdeffff Remove repeated consecutive characters and replace with the single letters: abcdef Original string: Yellowwooddoor Remove repeated consecutive characters and replace with the single letters: Yelowodor
Flowchart:
For more Practice: Solve these Related Problems:
- Write a Python program to compress a string by replacing consecutive duplicate characters with a single occurrence.
- Write a Python program to use regular expressions to remove repeated consecutive characters from a string.
- Write a Python program to iterate through a string and eliminate consecutive duplicates without changing the original order.
- Write a Python program to implement a function that reduces any string with repeating characters to its condensed form.
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