how to randomly select an element from an array having the least probability

Question

how to randomly select an element from an array having the least probability in matlab

example :

      A = [ 1,2,3,4,5,6]

      P = [ 0.01,0.2,0.25.0.2,0.25,0.09] % probability %

Answer 1

Find all indices of the minimum probabilities. Then generate a random interger depending on the number of equally minimum probabilities. Then use matrix indexing to extract a random index of minimum probability and then its corresponding element.

[~, ind] = mink(P,2); %All indices of minimum elements
Result = A(inds(randi(numel(inds))));   %Random minimum element