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DIY: Permutations

Explore how to implement a function that returns all possible permutations of a list of unique integers. This lesson helps you practice combinatorial problem-solving techniques relevant to coding interviews. You will understand constraints and produce outputs that cover every arrangement of input elements, strengthening your problem decomposition skills.

Problem statement

Given an array nums of unique integers, you will return all the possible permutations. You can return the answer in any order.

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