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Exercise: Pairs with Sums

Explore how to find pairs in a doubly linked list whose elements add up to a specified sum. This lesson helps you understand traversal order constraints and practice writing code that returns pairs in a specified string format, reinforcing your skills in linked list manipulation and problem-solving with Python.

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Problem

In this exercise, you are required to find pairs from a doubly linked list which sum to a specified number.

An example is illustrated for you below.

Coding Time!

In the code ...