vector of random natural numbers to matrix

Hello, I have a problem with the task, if someone could direct me / tell me how to do it

I have to do:

Create a 100-element vector of random positive numbers and then write it as a matrix with the number of rows equal to the number of unique numbers in the vector and 100 columns

and then to each element of the original vector encode its value as 1 in the field with index equal to the value of this element (one-hot encoding).

Thanks in advance!!!

[Jan]

What have you tried so far? What is your Matlab related question?

[Adam Danz]

hint:

doc rand
doc randi
doc ismember
doc isequal

Answer 1

[David Hill]

a=randi(100,1,100);
b=unique(a);
c=zeros(length(b),100);
for k=1:length(b)
    c(k,:)=a==b(k);
end