Problem description says the input can be a 9x9 matrix, but the test suite gives a 3x3 instead.
No 3x3 matrix in the description
3x3 for test
The second test case of matrix is not required..that never happens with sudoku. Only rows and columns should be inputs.
I've always wanted to create an algorithm to solve sudoku
neat & quick
This is really smart!
Looking at the test cases first will save lots of complications
Find relatively common elements in matrix rows
Arrange Vector in descending order
Find a subset that divides the vector into equal halves
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Lychrel Number Test (Inspired by Project Euler Problem 55)
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