Select less value from matrix than proviusly selected

Hi,

I have a matrix 10x10 i want to select random two values. In the next step i want to select also two values, but these values must be less than the previously selected. I mean

1 step Value1 =2, value2 = 4

2 step value1 = 1, value2 =3

3 step value1 = 0, value2 = 0

The code to select the values in the first step is

% V1 is the first value
V1=zmiana(randi(numel(zmiana)));
randomIndex = randi(length(zmiana), 1)
selected_x_value = zmiana(randomIndex)
%V2 is the second  value
V2=zmiana(randi(numel(zmiana)));
randomIndex = randi(length(zmiana), 1)
selected_y_value = zmiana(randomIndex)

But I really have no idea how to code the condition that the value in the next step must be less than the current value.

Please, advise.

Answer 1

[Matt J]

{A,B]=deal(zmiana);

while ~isempty(A) & ~isempty(B)

    % V1 is the first value
    V1=A(randi(numel(A)));
    A(A>=V1)=[];
    
    %V2 is the second  value
    V2=B(randi(numel(B)));
    B(B>=V2)=[];
    
end