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Explaining Leetcode #342 Power of Four (Easy)

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I am coding in Java since its syntax is easy to understand by all programmers. The algorithms can be applied easily in other languages and most functions that I use have a counterpart in your language of choice.
0:00 Explaining the problem concept
2:39 First coding attempt
6:17 Explaining the problem in the first attempt
7:02 Fixing the problem and reaching an optimal solution
Related Topics: Math, Bit Manipulation