I try but I don't understand the merge function (Alfonso and Richard solutions). Can you explain ?
since numbers only range from 0 to 3 you may consider each row of A or B as a 16-digit base-4 number and just convert it to a 32-bit integer...
But if we have less restrictions on the input range (for example values between 0 and 255) ?
Jean-Marie, the methodology of converting multiple column value words into a single value has limited but specific applications where value ranges are limited. In the case of DNA sequencing the values can be made numeric 0:3. For ranges up to 255 the width gets limited to stay under the 2^64, or 2^53 limit for double. This challenge was a demonstration of a method to improve performance for functions like ismember.
Sort a list of complex numbers based on far they are from the origin.
Poker Series 09: IsHighCard
Snakes on a plane
Number of 1s in a binary string
GJam 2014 Qualifier: Deceitful War (Small)
Elastic Collision 001: 1-D
Skyscrapers - Puzzle
GJam March 2016 IOW: Password Single
Unique: Faster for options 'rows' and 'stable' for large array of uint8
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