You may refer to the piece of code below that uses the find function to achieve your goal without using a loop.
function y = transformAdjArrayOnes(a)
y = a; %copying the input array
loc = find(a==1); %finding locations of 1
y(loc+1) = 1; %making right adjacent element to 1
y(loc-1) = 1; %making left adjacent element to 1
end
You may call the above function with your sample array as follows:
>> a = [ 0 0 1 0 0 0 1 1 1 0 0 0 1 0 ]
a =
0 0 1 0 0 0 1 1 1 0 0 0 1 0
>> transformAdjArrayOnes(a)
ans =
0 1 1 1 0 1 1 1 1 1 0 1 1 1
