clc; clear al;
m = 100 ;
data = randi([1 50],1,100) ; % random data bewtween 1 and 50
ll = [2 6 10] ; % lower limit
ul = [4 9 12] ; % upper limit
iwant = zeros(size(data)) ; % initialize the array wanted
for i = 1:length(ll) ;
idx = (data>=ll(i) & data<=ul(i)) ; % indices of given range
iwant(idx) = data(idx) ; % replace the indices with the values
end
