Create an index vector defined by two input vectors, one defining the beginnings of one or more index ranges, and the other defining the ends of the ranges.
The difficult part is that for and while loops are disallowed. No looping! [I apologize for the rudimentary regexp test for 'for' 'while' and 'eval'.] My test cases scan for usage of these substrings, so choice of variable names is effectively restricted as well.
So given 2 input vectors x1 and x2, the desired output is a third vector y, containing [x1(1):x2(1) x1(2):x2(2) ... x1(end):x2(end)]
Example:
x1 = [1 5 12]; x2 = [2 8 21];
Result:
y = [1 2 5 6 7 8 12 13 14 15 16 17 18 19 20 21]
Solution Stats
Problem Comments
Dirk Engel
on 27 Jun 2012
Please do not check for the occurance of "for" in general, because "UniFORmOutput" has nothing to do with looping ;-)
Freddy
on 27 Jun 2012
Your predefined function signature has only one parameter, altough two were submitted. Same problem without the "for" restriction: http://www.mathworks.com/matlabcentral/cody/problems/555-low-high-low-high-turn-around-create-a-subindices-vector
Pascal Wenger
on 28 Feb 2017
This is an excellent problem.
Solution Comments
1 Comment
Evan
on 22 Jul 2013
A separate test case that tests for functions that are against the rules would improve this problem. In this case, the "for" in "UniformOutput" was getting caught by the search. A separate test case would have made clear that the solution functions properly but contains an outlawed string.
1 player likes this solution
1 Comment
Jean-Marie Sainthillier
on 12 Dec 2012
Wonderful !
1 player likes this solution
1 Comment
Jean-Marie Sainthillier
on 12 Dec 2012
Why x3=[] in the test ?
Nice recursion !
1 player likes this solution
1 Comment
Jean-Marie Sainthillier
on 12 Dec 2012
Each solution of Richard is a gem.
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3 players like this problem