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Find the Unique Number

Understand how to find the unique number in a list where all others appear twice by applying the XOR bitwise operation. Explore the XOR property that cancels out duplicate numbers, enabling efficient identification of the unique element.

Problem statement

You are given a list of numbers in which every number is occurring twice except for one number. Find out the unique number.

Solution: Bit-masking approach

For this problem, we can use the logical XOR ...