Compare the result of loop

I want to compare the utilityD for every iteration if the new utiltiyD is greater that old one old UtilityD then the old UtilityD with corresponding A1,D1,P will be deleted and new UtiltyD with the corresponding A1,D1,P values will replace the old one. Can someone help me to incorporate the above-mentioned requirement in the below-mentioned code?

 A= rand(221); 
resultD=zeros(221,4,10);
for i=1:10
    A1= 0 + (1-0).*rand(221,1);
    X11= A*A1;
    P= zeros(221,1);
    P(:)= X11(:)/max(X11);
    D1= 0 + (1-0).*rand(221,1);
    UtilityD=0;
     for j=1:221
         UtilityD= (((1-P(j))*(D(j)/(D(j)+A1(j)))* V)-C) +UtilityD;
     end
    resultD(:,1,i)=A1;
    resultD(:,2,i)=D1;
    resultD(:,3,i)=P;
    resultD(1,4,i)=UtilityD;

Answer 1

[Shounak Shastri]

Add a temp variable in your code and store the new UtilityD value in temp.

At the end you can just add a if statement as follows

 if temp > UtilityD 
      UtilityD = temp;
 end

This will replace the old UtilityD value with the new one stored in temp variable.