Filter löschen
Filter löschen

Info

Diese Frage ist geschlossen. Öffnen Sie sie erneut, um sie zu bearbeiten oder zu beantworten.

how to obtain the number of cases of length. but those matrices sum must be 30 or something value(on constraints)

1 Ansicht (letzte 30 Tage)
first, -constraints-
elements must be between 4 and 12
for example,
A=[6 7 8 9], sumA=sum(A)=30;
What is number of cases of length that can be obtained so that the sum becomes 30?
For reference,
If the length of the matrix is 5, A is [5 5 6 7 7].
  3 Kommentare
Walter Roberson
Walter Roberson am 13 Sep. 2017
Stephen, you should not close duplicate questions that have Answers unless the Answers also appear in the original location.

Antworten (2)

KSSV
KSSV am 13 Sep. 2017
x0 = 4 ; x1 = 12 ;
x = x0:x1 ;
iwant = cell([],1) ;
count = 0 ;
for i = 1:length(x)
A = nchoosek(x,i) ;
thesum = sum(A,2) ;
if any(thesum==30)
count = count+1 ;
iwant{count} = A(thesum==30,:) ;
end
end
You have the possible combinations whose sum is 30 in iwant.
  3 Kommentare

Walter Roberson
Walter Roberson am 13 Sep. 2017

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!