clc
clear all
close all
X=[3,7,9,2,25,22,11,5]';
num=4;
max_grad=0;
index=1;
corrsepond_index=[];
for i=1:size(X,1)
max_grad=X(i);
for j=1:size(X)
if j~=i
if X(j)>=max_grad
max_grad=X(j);
index=j;
end
end
end
corrsepond_index=[corrsepond_index;index];
if size(corrsepond_index,1)==num
break;
end
X(index)=0;
end