Python Exercise: Accept a hyphen-separated sequence of words as input and prints the sorted words

Last update on March 29 2025 13:00:57 (UTC/GMT +8 hours)

15. Sort Hyphen-Separated Sequence of Words Alphabetically

Write a Python program that accepts a hyphen-separated sequence of words as input and prints the words in a hyphen-separated sequence after sorting them alphabetically.

Sample Solution:

Python Code:

# Take user input and split it into a list based on the hyphen ("-") separator, creating a list named 'items'
items = [n for n in input().split('-')]

# Sort the elements in the 'items' list in lexicographical order (alphabetical and numerical sorting)
items.sort()

# Join the sorted elements in the 'items' list using the hyphen ("-") separator and print the resulting string
print('-'.join(items)) 

Sample Output:

green-red-black-white                                                                                         
black-green-red-white 

Explanation:

In the exercise above the code takes user input, splits it based on the hyphen -, and stores the parts in a list called 'items'. It then sorts these items in lexicographical order (ascending order for text strings and numerical order for numbers). Finally, it joins the sorted items using the hyphen - as a separator and prints the resulting string.

Pictorial presentation:

Flowchart:

For more Practice: Solve these Related Problems:

• Write a Python program that splits a hyphen-separated string into a list, sorts the list, and joins it back into a hyphen-separated string.
• Write a Python program to reverse the order of words in a hyphen-separated string and then sort them alphabetically.
• Write a Python program to implement a function that takes hyphen-separated words and returns them sorted, handling duplicate words gracefully.
• Write a Python program to use regular expressions to split a hyphen-separated string, sort the words, and then reassemble the string.

Python Code Editor:

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