Solution: Single Number II
Understand how to use bitwise XOR operations to identify two unique numbers in an array where all others appear twice. Discover how to isolate the rightmost set bit and separate numbers into groups to efficiently solve the problem with constant 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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