Good problem... but they definitely need to fix the way "size" is calculated.
Replace NaNs with the number that appears to its left in the row.
Angle between two vectors
Rotate a Matrix by 90 degrees
Number of digits in an integer
04 - Scalar Equations 3
Project Euler: Problem 10, Sum of Primes
Choose the best fitting dominoes
Poker Series 08: IsPair
Decode a simplified barcode
Convert a vector into a number
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