Palindrome Pairs at Airbnb

Problem Description

You are given a **0-indexed** array of **unique** strings `words`. A **palindrome pair** is a pair of integers `(i, j)` such that: * `0 <= i, j < words.length`, * `i != j`, and * `words[i] + words[j]` (the concatenation of the two strings) is a palindrome. Return _an array of all the**pal...

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