Question

FOR MATLAB:

generate a function that determinws if a number is a prime number. Do not use any MATLAB build-in functions . The function should output 1 for numbers that are prime and 0 for numbers that are not prime. The function should be able to accept input as a vector.

Answer 1

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function result=myprime(n)
%result=true;
  
%check if number is a nonnegative integer
if floor(n)~=n || n<0
result=false;
return
end
% check if number can be divided by another integer
for k=2:(n/2)
if rem(n,k)==0
result=false;
return
end
end
result=true;
return
end
  
myprime(7)
myprime(72)
myprime(19)
myprime(10)

Output:

焱New Project-20170424 t7+ « ą, Execute. I > Share Code demo.mx 1 function result-myprime (n) · root demo.m %result-true; 4 check if number is a nonnegative integer 5 if floor (n)-n II nce result-false; return end % check if number can be divided by another integer for k-2: (n/2) 1e if rem(n,k)-0 12 13 14 15 16 17 18 end 19 2e myprime(7) 21 myprime(72) 22 myprime (19) 23 myprime (10) result-false; return end end result true return P-Default Term +Browser sh-4.35 octave -qf -no-window-system demo.m octave: X11 DISPLAY environment variable not set octave: disabling GUI features warning: function ./demo.m shadows a core library function ans 1 ans - ans 1 ans - sh-4.3s