MATLAB 中在一个数组内随机选择n个数。

例如：在 A = [10, 50, 80, 100, 130, 260] 中随机选择5个数。

允许重复：

n = 5;
A = [10, 50, 80, 100, 130, 260];
random_num = A(randi(numel(A),1,n));
random_num = sort(random_num);

不允许重复：

n = 5;
A = [10, 50, 80, 100, 130, 260];
random_num = A(randperm(numel(A),n));
random_num = sort(random_num);

https://blog.csdn.net/qq_33555334/article/details/108095131