Python: Reverse a string if it's length is a multiple of 4

Last update on December 21 2024 07:46:29 (UTC/GMT +8 hours)

Reverse string if length is a multiple of 4.

Write a Python function to reverse a string if its length is a multiple of 4.

Sample Solution:

Python Code:

# Define a function named reverse_string that takes one argument, 'str1'.
def reverse_string(str1):
    # Check if the length of the input string 'str1' is divisible by 4 with no remainder.
    if len(str1) % 4 == 0:
        # If the length is divisible by 4, reverse the characters in 'str1' and join them together.
        return ''.join(reversed(str1))
    
    # If the length of 'str1' is not divisible by 4, return 'str1' as it is.
    return str1

# Call the reverse_string function with different input strings and print the results.
print(reverse_string('abcd'))   # Output: 'dcba' (Reversed)
print(reverse_string('python')) # Output: 'python' (Not reversed)

Sample Output:

dcba                                                                                                          
python 

Flowchart:

Python Code Editor:

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