More tests. A lot of solutions assume that mask has only 2 columns.
Good suggestion. I've added a couple more tests to the suite, including one that has three columns in the logical mask.
Is there a way to just view the solution to this? I've been trying to do this for my own work, and this problem is the only thing I've found that purports to do what I need, but of course it doesn't actually tell me how.
Test if a Number is a Palindrome without using any String Operations
Bottles of beer
Rotate a Matrix by 90 degrees
Volume of a sphere given its surface area
So many choices
Is my wife right?
Factorize THIS, buddy
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