I actually had one of the 30 matlab solutions you mentioned. Did you have much luck in round1A? Sadly, I did not.
Determine Whether an array is empty
Doubling elements in a vector
Replace multiples of 5 with NaN
Maximum value in a matrix
Gene Sequence Contest: Retro
REPMAT Enhancement - Faster for Large Row Replication of Vector
Image Processing 002 : Fix Vignetting in a Visible Sensor
USC Spring 2013 ACM: Building Snowmen
USC Spring 2012 ACM: Armageddon
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