Write reduce function, that takes arguments and constantly folds results into next call argument, finally returning a value; i.e. for a binary operator Fb,
reduce(Fb,{a,b,c},start_val) = F(F(F(start_val,a),b),c)Same can be done for a n-ary operators.
Eg. reduce(@strcat,{'foo','bar','baz','bat'},' ') = reduce(@plus,{1,2,3,4},0) = 10 reduce(@max,{1,2,3,4},{5,6,7,8},5) = 8
Remember, we use cell arrays for passing arguments, not matrices!
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3 Comments
@bmtran
on 17 Apr 2012
could you separate your asserts into multiple cells so you can see which test case is failing?
@bmtran
on 17 Apr 2012
also, how do you define the n-ary behavior since max only takes up to 2 non-empty arguments?
Muthu Annamalai
on 17 Apr 2012
I mean, n-ary operators are also supported, but I use max as a binary op.
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