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How to Sort a List of Strings Based on Values in a Parallel List?

Mary-Kate Olsen
Mary-Kate OlsenOriginal
2024-12-14 22:15:14463browse

How to Sort a List of Strings Based on Values in a Parallel List?

Sorting a List Based on Values from a Parallel List

Consider the following scenario: you have a list of strings, X, and a corresponding list of values, Y. Your task is to sort X using the values in Y. For instance, given:

You aim to obtain the sorted output:

While traditional approaches using loops are viable, a concise solution exists:

This code:

  1. Zips the two lists, Y and X, creating a list of tuples: [(0, 'a'), (1, 'b'), ... (2, 'g')].
  2. Sorts the zipped list using the values in Y as the sort key.
  3. Extracts the second element of each tuple (the strings) using a list comprehension.

The result is a sorted list of strings in the desired order.

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