This would be improved by a richer test set to avoid solutions based on simple lookup of the test cases.
I think we can assume the entries are all positive integers, but it would be good if that was stated in the problem specification.
Definetely agree. Adding more tests in the test suite and rescoring the solutions will elmiminate solution under a score of 92
My 33 is a terrible solution. Please add more test cases.
Tim's 80 is very good and my 83 is also valid. Addition of a common random value at an end overlap will eliminate chicanery. v=randi(100) [1 2 3 v] [v 4 5].
Created legitimate size 72.
Added a few more tests. Thanks for the comments!
s1 = [3 1 4 1 5 9 2 6 5 3 5];
s2 = [9 2 6 5];
s3_correct = [3 1 4 1 5 9 2 6 5 3 5]; maybe is not correct ;-)
Problems 1 and 2 have alternate solutions:
1) [5 4 3 1 2 3 4 5]
2) [1 0 1 7 7 7 6 0 1]
Did I just solved this myself? Toughest for me so far. Thanks!!!
This did not make me sleep. Most difficult so far, took me some few hours lol.
minor point - the specification is poorly worded.
The test input/output is not strings, but rather integer arrays.
s1 = [10 20 30 40 50]
rather than "10 20 30 40 50"
I suppose this problem was written before the introduction of strings to Matlab (2016b) and so it may not have been so ambiguous at the time. (although even back then I would have interpreted the word "string" to mean a character array.)
Nice, but misses an edge case, hence not quite correct. It will enter an infinite recursion loop when the two inputs, s1 and s2, are disjoint (i.e. they do not overlap).
Easy to fix with a check that intersect(s1,s2) is not empty.
Try this with: [ 1 2 3], [3 1 2]
Finds: [1 2 3 1 2]
Should find: [3 1 2 3]
The solution is not correct.
It hard codes a test case that it cannot pass otherwise.
There are other cases that it cannot solve, although not in the test set.
hello, have you ever tried s1 = [ 1 2 3 ], s2= [1 2]?
Nice :) I was trying to think of clever ways to use convolution, but didn't manage. This should be the leading solution instead of the lookup based on the test cases..
Come on. Put in a general solution rather than gaming the solution set.
Number of digits in an integer
Summing Digits within Text
Test for balanced parentheses
Determine if input is odd
Find the treasures in MATLAB Central and discover how the community can help you!
Choose a web site to get translated content where available and see local events and offers. Based on your location, we recommend that you select: .
You can also select a web site from the following list:
Select the China site (in Chinese or English) for best site performance. Other MathWorks country sites are not optimized for visits from your location.
Contact your local office