A better description for this problem can be found at http://joonprogramming.blogspot.com/2016/04/google-code-jam-qualification-round-1a_17.html We have to find an NXN matrix, without repeating numbers at any row or column that must be ordered. And we have 2*N-1 strips of scrambled numbers, which can be rows or columns. The problem is to find what the missing strip is (notice that a NXN matrix has 2*N strips).
Determine if a Given Number is a Triangle Number
Remove NaN ?
Add more zeros
Replace multiples of 5 with NaN
Tiles Contest: Perfect Solutions for Large Unique Tile Boards
Make a Pandiagonal Prime Magic Square: 11 x 11
Kurchan 3x3 - Optimal Score
Sudoku Solver - Standard 9x9
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