MATLAB: Random order, but equally appearance

random number generator

If i want a random order of numbers, you can use randi. But how can i get that every number will be equally appear? So for the numbers 1 till 4, a random order but every number at least one time.

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doc randperm

Related Solutions

MATLAB: Second Order, Piecewise ODE help

fun=@(t,y)[y(2);-4*y(1)];
y0=[0 0];
tspan=[0 5];
[T1,Y1]=ode45(fun,tspan,y0);
fun=@(t,y)[y(2);-4*y(1)+(t-5)/5;
y0=[Y1(end,1) Y1(end,2)];
tspan=[T1(end) 10];
[T2,Y2]=ode45(fun,tspan,y0);
fun=@(t,y)[y(2);-4*y(1)+1];
y0=[Y2(end,1) Y2(end,2)];
tspan=[T2(end) 20];
[T3,Y3]=ode45(fun,tspan,y0);

Now put T1, T2, T3 and Y1, Y2, Y3 together to get the result of your ODE on [0 20].

Best wishes

Torsten.

MATLAB: Generating random numbers in order

If a and b are the lower and upper limits you have in mind for the numbers, do this:

 x = sort((b-a)*rand(n,1)+a,'ascend' or 'descend');

Best Answer

Related Solutions

MATLAB: Second Order, Piecewise ODE help

MATLAB: Generating random numbers in order

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