Problem 147. Too mean-spirited

Created by the cyclist

Find the mean of each consecutive pair of numbers in the input row vector. For example,

x=[1 2 3] ----> y = [1.5 2.5]

x=[100 0 0 0 100] ----> y = [50 0 0 50]

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713 solvers submitted 1284 solutions (1.8 solutions/solver).

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Solution 190557

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Rodrigo Portugal on 29 Mar 2013

Why is eval forbidden while regexp isn't? Don't they have the same 'nature'?

Michael Cappello on 24 Oct 2013

It seems that the vast majority of leading solutions are size 10 or 11. If a problem has a single output, then having a return argument of 'ans' makes the size smaller. For instance: function ans=findmean(x,y) mean([x y]) is smaller in size than function m=findmean(x,y) m = mean([x y]) This seems silly, and makes me think that there is some 'trick' to these size 10&11 solutions that has little to do with good coding practices. Of course, it could just be sour grapes on my part because I can't get my sizes even close to that small.

Solution 11562

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Matthew M. on 28 Aug 2012

As with so many Cody problems, the straightforward answer computes fastest even though it isn't the "smallest size".

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Problem 147. Too mean-spirited

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713 solvers submitted 1284 solutions (1.8 solutions/solver).

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