How to detect differencens between 2 vectors that are sorted?
1 vue (au cours des 30 derniers jours)
Afficher commentaires plus anciens
vthuongt
le 24 Août 2015
Commenté : Bjorn Gustavsson
le 24 Août 2015
I have to following problem: I got a vector A = [1 20 3650 4000 NaN NaN] of fixed size (here 6). Given A I generate B in such a way that I generate a new value depending on the last non-NaN value of A (in this case 4000). The new Value is now 4000*rand. For example 4000*rand = 1111. So B becomes B = [1 20 1111 3650 4000 NaN], also of fixed Size 6 and sorted. More precisely the value 1111 is appended to the vector A and then sorted so that it becomes B.
But if I just have B and A given and the knwoledge of the generation process, how can I detect the 1111? My naive approch would be, looping from 1 to end through all the elements and since I know the vectors are sorted the first missmatch is the new element. But I wondered whether their is a nicer/faster solution for this?
Thanks in advance!
2 commentaires
Azzi Abdelmalek
le 24 Août 2015
Please give a correct example, in your example B is 1x5 not 1x6 like you said, and explain how 4000*rand is located in your new matrix?
Réponse acceptée
Bjorn Gustavsson
le 24 Août 2015
Surely this answer is what your teacher want you to learn:
setdiff(B,A)
2 commentaires
Bjorn Gustavsson
le 24 Août 2015
I have no idea but just became curious. Please investigate and then tell us about the results.
Plus de réponses (0)
Voir également
Catégories
En savoir plus sur Logical dans Help Center et File Exchange
Produits
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!