# MATLAB: Is it possible to speed up this loop or avoid from using

for loopperformancespeed

I give an example code below including 4 loops. How can I speed up this procedure? thanks for any help and ideas.
``clc;clear all%%inputsdx=1; dy=1; xo=5;f1=5;f2=10;f3=15;kx=1:50;ky=1:50;k=rand(50,50);z=rand(50,50);%%%%%%% how can I improve this example below for running faster ? ticfor j=1:50    for i=1:50        total=0;        for m=1:50            beta= (m-1)*dy;               for n=1:50                alpha= (n-1)*dx;                f4 =(1-exp(-(xo+ 2.*pi.*k(j,i)).*z(m,n)));                f5 = exp(-2.*pi.*(kx(i).*alpha + ky(j).*beta));                total = total+ f1.*f2.*f3.*f4.*f5;            end        end        L(j,i)=total;    endendtoc``

• ``dx=1; dy=1; xo=5;f1=5;f2=10;f3=15;kx=1:50;ky=1:50;k=rand(50,50);z=rand(50,50);%%%ky=ky(:);z=reshape(z,[1,1,size(z)]);alpha=reshape((0:49)*dx,1,1,1,[]);beta=reshape((0:49)*dy,1,1,[]);f4 = (1-exp(-(xo+ 2.*pi.*k).*z));f5 = exp(-2.*pi.*(kx.*alpha + ky.*beta));L=(f1.*f2.*f3).*sum(  sum( f4.*f5, 3)  ,4);``