Dedupe Unsorted Array (Three Variants)

Dedupe an Unordered Array (Three Variations) Problem Overview Implement a method that receives an unsorted integer array and produces an array containing each distinct value once. The interviewer presents three increasingly restrictive versions, each intended to test a separate capability: Variant 1 (warm-up). Produce an array with duplicates removed, with no extra restrictions. Variant 2. Do the same, while retaining the input order of each value's first appearance. Variant…