Solution Review: Single Number
Explore the use of the bitwise XOR operator to solve the single number problem. Understand how XOR properties can isolate a unique number among duplicates by iterating and applying XOR to all elements. This lesson teaches you to implement this algorithm with O(n) time and O(1) space complexity.
We'll cover the following...
We'll cover the following...
Solution review: Bit manipulation
We are dealing with bit manipulation and want to solve all of these problems with Bitwise operators.
Concepts
If we take XOR of zero and a bit, it will return that bit.
a ^ 0 = a
If we take XOR of two same bits, it will return 0.
a ^ a = 0
For n numbers, the below math can be applied.
a ^...