Please add more cases to the test suite, or else it is trivial to solve this problem.
Rafael is right and since you made this into a badge problem it is even more essential to fix this
Test for balanced parentheses
Given an unsigned integer x, find the largest y by rearranging the bits in x
Replacing a row
Pernicious Anniversary Problem
Find Logic 4
Find Logic 8
Find Logic 9
Find Logic 29
Find Logic 22
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