In the following in program, I want print only the resultant Matrix D which its sum is zero also their corresponding combinations Matrix E a using any conditional statements

A = [0 1 0 0 0 1 ; 1 0 1 0 0 0 ; 0 1 0 1 0 0 ; 0 0 1 0 1 0; 0 0 0 1 0 1 ; 1 0 0 0 1 0];

B = [1; 2; 3; -3; -2; -1];

C = perms (B);

E=C

D=C*A

output:

E = 3 2 1 -1 -2 -3

3 2 1 -1 -3 -2

3 2 1 -2 -1 -3

3 2 1 -2 -3 -1

3 2 1 -3 -1 -2

3 2 1 -3 -2 -1 and so on...

D = -1 4 1 -1 -4 1

0 4 1 -2 -3 0

-1 4 0 0 -5 2

1 4 0 -2 -3 0

0 4 -1 0 -5 2 and so on...

Here i have lot of outputs for E and D.

so, I want print only the resultant Matrix D with two conditions

i) Matrix D has atmost one zero.

ii) Sum of all elements in D = 0.

and also their corresponding combination of Matrix E

by using any conditional statements (example for , if conditions).

• if exist such matrix D & E, then display "Matrix D and corresponding Matrix E"
• if does not exist such Matrix, then display " there is no such combination".

Answer 1

[Enrico Gambini]

If I got it right...

if ((sum(any(D,'all'))<=1) & (sum(D,'all'))==0 &(sum(any(E,'all'))<=1) & (sum(E,'all'))==0)
fprintf("Matrix D and corresponding Matrix E\n");
else 
fprintf("There is no such combination \n");
end

[bala maths]

i have this error

error: any: DIM must be an integer

error: called from

jdoodle at line 7 column 1

Can you execute this program?