I have a variable vector like the active: [2 3 4] vector. I select a random element (B) from the active set and use it in a different vector. What function can I use to delete the randomly selected (B) value from the active vector?

I have a variable vector like the active: [2 3 4] vector. I select a random element (B) from the active set and use it in a different vector. What function can I use to delete the randomly selected (B) value from the active vector?

Answer 1

[Stephen23]

vec = setdiff(vec,B,'stable')

Answer 2

[Dimitris Kalogiros]

Suppose you have a vector x and you want to select , use and then delete a random element of it.

Have a look at the following :

close all; clc;

% create a vector x
x=10:10:100;
disp(['initial value of x = ' num2str(x)]);

% choose a random element of x
random_index=randi(length(x)); 

% take your element
y=x(random_index);
disp(['chosen value y = ' num2str(y)]);

% remove this specific element from vector x
x(random_index)=[];
disp(['final value of x = ' num2str(x)]);