despites its pass,my sol still wrong when it be the case:"n=7",because the central element always zero no matter how we change input "n",
my solution is actually wrong.but TestSuite didn't add a "n=7" case,so...
Smallest size solution here without regexp cheat nor look up table.
Given an unsigned integer x, find the largest y by rearranging the bits in x
First non-zero element in each column
frame of the matrix
find the roots of a quadratic equation
Make combination of two given matrices.
BULLSEYE Part 2: Reference Problem 18 BULLSEYE
Put Two 1D matrices into one 1D matrix
Diagonal & Anti-Diagonal Matrix: Easy
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