Swap the first and last columns
Determine if a Given Number is a Triangle Number
We love vectorized solutions. Problem 1 : remove the row average.
y equals x divided by 2
Implement a ROT13 cipher
Most nonzero elements in row
Tic Tac Toe FTW
Replace NaNs with the number that appears to its left in the row.
Word Counting and Indexing
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