Solution: Find Symmetric Pairs in an Array
Explore how to identify symmetric pairs in an array by using hashing to check for reversed pairs efficiently. Understand the algorithm and its implementation in JavaScript, along with analyzing time and space complexity to prepare for coding interviews.
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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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