[Tut] How to Sort Words Alphabetically in Python?

[Tut] How to Sort Words Alphabetically in Python? - Printable Version

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[Tut] How to Sort Words Alphabetically in Python? - xSicKxBot - 08-11-2022

How to Sort Words Alphabetically in Python?

5/5 – (1 vote)

Problem Formulation and Solution Overview

In this article, you’ll learn how to sort words alphabetically in Python.

To make it more fun, we have the following running scenario:

Some English sayings, also known as Tongue-Twisters, are fun to try and say quickly. They are also used to improve non-English speaking individuals and small children’s fluency and pronunciation of the English language.

Imagine how challenging tongue twisters would be if sorted in alphabetical order!

Question: How would we write code to sort a string in alphabetical order?

We can accomplish this task by one of the following options:

Method 1: Use
Code:
split()
and
Code:
sort()
Method 2: Use
Code:
split()
,
Code:
sorted()
and
Code:
join()
Method 3: Use
Code:
Bubble Sort Algorithm
Method 4: Use
Code:
sort_values()

Method 1: Use split() and sort()

This method uses Python’s built-in

Code:
string

library to reference

Code:
split()

and

Code:
sort()

to display the words in ascending alphabetical order.

Code:
twister = 'how much wood would a woodchuck chuck if a woodchuck could chuck wood?'.lower().split()
twister.sort()
print(twister)

Above declares a tongue twister, converts the entire string to lowercase (

Code:
lower()

) and breaks it apart (

Code:
split()

) by default, on the space (

Code:
' '

) character. The results save to

Code:
twister

in a

Code:
List

format. If output to the terminal, the following displays.

Code:
['How', 'much', 'wood', 'would', 'a', 'woodchuck', 'chuck', 'if', 'a', 'woodchuck', 'could', 'chuck', 'wood?']

The following line sorts twister (

Code:
sort()

) in ascending alphabetical order. If output to the terminal, the following would display.

Code:
['a', 'a', 'chuck', 'chuck', 'could', 'how', 'if', 'much', 'wood', 'wood?', 'woodchuck', 'woodchuck', 'would']

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Method 2: Use split(), sorted() and join()

This method uses Python’s built-in

Code:
string

library to reference

Code:
split()

and

Code:
sorted()

to display the words in descending alphabetical order.

Code:
twister = 'I scream, you scream, we all scream for ice cream!'.lower()
twister = ' '.join(sorted(twister.split(), reverse=True)) print(twister)

Above declares a tongue twister, then converts the string to lowercase (

Code:
lower()

). The results save to

Code:
twister

in a

Code:
List

format. If output to the terminal, the following would display.

Code:
['i', 'scream,', 'you', 'scream,', 'we', 'all', 'scream', 'for', 'ice', 'cream!']

The following line breaks it apart (

Code:
split()

) by default, on the space (

Code:
' '

) character. Then,

Code:
twister

is sorted (

Code:
sorted()

) in descending alphabetical order (

Code:
reverse=True

).

The words are combined using the

Code:
join()

function, saved to

Code:
twister

and output to the terminal.

Code:
['you', 'we', 'scream,', 'scream,', 'scream', 'ice', 'i', 'for', 'cream!', 'all']

Method 3: Use Bubble Sort Algorithm

This method uses the famous

Code:
Bubble Sort Algorithm

. This function accepts a

Code:
List

and loops through each element, comparing two (2) values, the current element value and the next element value. The greater element floats to the top, and the loop continues until the Listis sorted.

Code:
twister = 'Which wristwatches are Swiss wristwatches?'.lower().split() def bubblesort(lst): for passesLeft in range(len(lst)-1, 0, -1): for i in range(passesLeft): if lst[i] > lst[i + 1]: lst[i], lst[i + 1] = lst[i + 1], lst[i] return ' '.join(lst) print(bubblesort(twister))

Above declares a tongue twister, converts the entire string to lowercase (

Code:
lower()

) and breaks it apart (

Code:
split()

) by default, on the space (

Code:
' '

) character. The results save to

Code:
twister

in a

Code:
List

format. If output to the terminal, the following displays.

Code:
['which', 'wristwatches', 'are', 'swiss', 'wristwatches?']

Next, the

Code:
bubblesort()

function is declared and accepts one (1) argument, an iterable

Code:
List

. An explanation of this code is outlined above.

However, we modified the code slightly to return a new string containing the sorted

Code:
List

values.

The

Code:
bubblesort()

function is then called and passed

Code:
twister

as an argument. The results are output to the terminal.

Code:
are swiss which wristwatches wristwatches?

Method 4: Use sort_values()

This function imports the PandasLibrary to reference the

Code:
sort_values()

function. This function sorts column(s) in a DataFrame.

To run this code error-free, install the required library. Click here for installation instructions.

To follow along, click here to download the

Code:
finxters.csv

file. Move this file to the current working directory.

Code:
import pandas as pd df = pd.read_csv('finxters.csv', skip_blank_lines=True, usecols=['FID', 'Username', 'Rank'])
rank_sort = df.sort_values(by=["Rank"], ascending=True)
print(rank_sort)

Above, imports the Pandas library.

Then, the

Code:
finxter.csv

file is read in, omitting blank lines, selecting the three (3) stated columns and saving to

Code:
df

.

Next, sort is applied to the

Code:
Rank

column, which contains the words pertaining to a user’s achievement level. The DataFrame (

Code:
df

) is sorted based on this column and the results save to

Code:
rank_sort

Summary

These four (4) methods of sorting words alphabetically should give you enough information to select the best one for your coding requirements.

Good Luck & Happy Coding!

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