For loop every combination

Hello community,

I want for loops to check every element from 1 to n with all other elements. so letst say n=4

So I want to check Number 1 with 2,3 and 4// check number 2 with 3 and 4// and check number 3 with 4.

Can I build one or maybe two for loops for something like that?

[Scott MacKenzie]

Please explain what you mean by "check".

When you say "check Number 1 with 2,3 and 4" what sort of operation or result are you contemplating?

[gamer]

Hey Scott,

so I ve got a matrix v = rand(n,2) and p = rand(n,2) .

for h =1:1000
p = p+v;

But if p(i,:) is in the near of p(j,:), they should switch the value of v. Now I will make an example for row i = 1 and i =4.

if norm(p(1,:)-p(4,:)) <= 2*r
v(1,:) = temp1
v(1,:) = v(4,:)
v(4,:) = temp1
end
end

And I know i want to verify the norm for every rows with all others. And then swaping the v of these rows, if the if statement is true. So I think I have to use two for loops, but I am not sure.

Answer 1

[Sulaymon Eshkabilov]

Go over this help documentation and will understand how and what to do with [for ... end] loop iteration

https://www.mathworks.com/help/matlab/ref/for.html