Generate a 2-dimensional array with random numbers

I want to generate a 2-dimensional array with random numbers. * The first column would contain values from 5 to 1000 and the second column would contain values from 1 to 7.*

I generated a 2-dimensional array with random numbers, but not sure about the bold part of the above paragraph.

Y = 10

Z = 2

result = rand(Y,Z);

result(:,2:2:end) = result(:,2:2:end) .* result(:,2:2:end)

Answer 1

[Stephan]

Hi,

does this help:

n = 100; % number of random numbers
A = zeros(n,2);
A(:,1)= randi(996,n,1)+4;
A(:,2)= randi(7,n,1)

[Hoque]

the middle "10" means it generates 10 random numbers, right? When I replace it with 100, the code doesn't work.

[Stephan]

See edited answer... my mistake- I forgot to preallocate...

[Hoque]

Thanks! :)

Answer 2

[Joel Meyer Espinoza]

result(:,1)=randi([1 1000],1,10); result(:,2)=randi([1 7],1,10);

should work

it generates only int though the first parameters are the range of random numbers and the last two the size of the array

look here for more info

https://de.mathworks.com/help/matlab/math/random-integers.html

[Joel Meyer Espinoza]

make sure to hit enter after the first semicolon in the code