Search⌘ K
AI Features

Solution: Single Number II

Understand how to use bitwise XOR operations to find two unique elements in an array where every other element appears twice. Explore techniques to separate these numbers efficiently using constant extra space and linear time. Learn the step-by-step process to differentiate and extract unique elements by leveraging the rightmost set bit.

Statement

Given a non-empty array arr, in which exactly two elements appear once, and all the other elements appear twice, return the two elements that appeared only once.

Note: The result can be returned in any order. The solution should use only constant extra space.

Constraints:

  • 22 \leq ...