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Solution: Find Symmetric Pairs in an Array

Explore how to find symmetric pairs in an array by using hashing in Go. Understand the approach to check for pairs and their reverses efficiently, implementing a map-based solution for linear time complexity and practical interview preparation.

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Statement

Given an array of pairs, nums, find all the symmetric pairs from it.

A symmetric pair is defined as a pair [a, b] such that both [a, b] and [b, a] exist in the array.

  • If no symmetric pair is found, return an empty array.

  • Each symmetric pair should be returned once (you may return either [a, b] or [b, a]).

  • The output can be in any order.

Constraints:

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