i am trying to prove time shift property of discrete fourier transform.....but i dont know how to multiply x(w) with the e^-jwn?

clc x= [1 1 1 -1 1 1] N=length(x); for k=1:N X(k)=0; for n=1:N X(k)=X(k)+x(n).*exp(-1j.*2.*pi.*(n-1).*(k-1)./N); end end; k=abs(X) j=angle(X) b=[zeros(1,2) 1 1 1 -1] N=length(b); for k=1:N y(k)=0; for n=1:N y(k)=y(k)+b(n).*exp(-1j.*2.*pi.*(n-1).*(k-1)./N); end end; h=abs(y) l=angle(y) N=length(b) n=2 for k=1:N

        f(k)=exp(-1j.*2.*pi.*(n-1).*(k-1)./N)
end;
g=f.*X;
m=abs(g)
n=angle(g)

d=h-m; axes(handles.axes2) stem(y) d1=n-l; axes(handles.axes3) stem(g)