Tips on grids and matrix

Very confused on how to go about this:

I need to write a script for a "rock paper scissors game" that creates:

- a grid of 2D points with integer values, varying from 1 to N.

- an NxN matrix A that represents the initial distribution of the three populations (each population being "rock", "paper", or "scissors")

Not looking for answers, just point me in the right direction please! i am awful at matlab

Answer 1

[Arjun]

Hi @Melissa Hickman,

As I understand it, you need a 2D grid of integer values and an N×N matrix populated with a random distribution of "rock", "paper", and "scissors".

To create a 2D grid of points with values ranging from 1 to N, you can start by initializing an N×N cell array using MATLAB’s "cell" function. Then, use nested "for" loops to populate the grid with integer values. Please refer to the code segment below:

N=4;
grid = cell(N, N);
for i = 1:N
    for j = 1:N
        grid{i, j} = [i, j];
    end
end
disp(grid);

    {[1 1]}    {[1 2]}    {[1 3]}    {[1 4]}
    {[2 1]}    {[2 2]}    {[2 3]}    {[2 4]}
    {[3 1]}    {[3 2]}    {[3 3]}    {[3 4]}
    {[4 1]}    {[4 2]}    {[4 3]}    {[4 4]}

To generate the desired matrix with the initial distribution, you can again create an N×N cell array and use nested for loops to fill it. A random number generator such as "randi" can be used to assign values from 1 to 3, where 1 represents "rock", 2 represents "paper", and 3 represents "scissors". Please refer to the code section below:

N=4;
populations = {'rock', 'paper', 'scissors'};
A = cell(N, N);
for i = 1:N
    for j = 1:N
        A{i, j} = populations{randi(3)};
    end
end
disp(A);

    {'rock'    }    {'paper'   }    {'scissors'}    {'rock'    }
    {'paper'   }    {'paper'   }    {'paper'   }    {'scissors'}
    {'scissors'}    {'paper'   }    {'scissors'}    {'scissors'}
    {'rock'    }    {'scissors'}    {'rock'    }    {'scissors'}

I hope this helps!