Скачать или смотреть How to Sort a List of Names by Last Name Using Bubble Sort in Python

Discover how to efficiently sort a list of names by last name using `bubble sort` in Python. Learn tips and tricks with example code for an easy implementation.
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Sorting Names in Python: A Guide to Last Name Order

When handling a list of names, you may often find yourself needing to sort them. If your names are formatted as "First Last" and you want to sort them based on the last name, you might wonder how to achieve this using Python. This guide will guide you through the process of sorting a list of names alphabetically by their last names.

Understanding the Problem

Suppose you have a list of names in the format:

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Your goal is to rearrange this list so that the names appear in order based on their last names. The challenge lies in the fact that the first name appears before the last name, and you need to effectively sort the full name.

Solution Breakdown

1. Implementing Bubble Sort

To sort the list, we can use a sorting algorithm known as bubble sort. This method keeps swapping adjacent elements if they are in the wrong order, ultimately sorting the entire list.

Here's a simple implementation of the bubble sort algorithm:

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2. Comparing Last Names

Next, you need to compare the last names in the cmp_names function. This function will split each name, extract the last name, and compare them:

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3. Putting It All Together

Now, you can combine swapping and comparison by calling the bubble_sort function on your list of names:

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4. Result

When you run this code, the sorted list by last names will look like this:

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Alternative Approach

While bubble sort does the job, it can be inefficient for large lists. In Python, you can also use the built-in sorted function, which is highly optimized. Here’s how:

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This one-liner achieves the same sorted list based on last names with minimal code.

Conclusion

Sorting a list of names by last names can be done effortlessly with Python. You can use a custom bubble sort approach or leverage built-in functions for a more efficient result. Whether you are working with small or large datasets, these techniques will help you maintain an organized and efficient list of names.

With this knowledge, sorting names should no longer be a challenge!