Solution: Single Number II
Understand how to use bitwise XOR to separate two unique numbers from duplicates in an array. This lesson teaches an efficient method utilizing XOR and bit manipulation to solve the problem with constant extra space and linear time complexity.
We'll cover the following...
We'll cover the following...
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:
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