min/max/mean without matlab functions

Hi all. I need to write a code that will give me the min/max value of a certain random matrix(150X200), without the use of matlab built in functions. Can anyone assist me please?

[Azzi Abdelmalek]

What have you done so far?

[Image Analyst]

It's only like 10 lines of code? What sort of assistance do you want, that we can give without actually giving you the lines of code? Someone tagged it with for and if - yes, you'll need those. What other help can we give?

Answer 1

[Amith]

As per my understanding you wanted to know how to find min max and mean of the numbers in a random matrix without using built in functions. Below is the code for doing the same.

% Generate random matrix
rows = 150;
cols = 200;
matrix = rand(rows, cols);

% Initialize minimum and maximum values
min_val = matrix(1,1);
max_val = matrix(1,1);
mean_val = 0;
sum = 0;


% Iterate through matrix to find minimum and maximum values
for i = 1:rows
    for j = 1:cols
        if matrix(i,j) < min_val
            min_val = matrix(i,j);
        end
        if matrix(i,j) > max_val
            max_val = matrix(i,j);
        end
        sum = sum + matrix(i,j);
    end
end
total = rows*cols;
mean_val = sum / total;

% Display results
fprintf('mean value of all the elements in the matrix is %f\n',mean_val);
fprintf('Minimum value: %f\n', min_val);
fprintf('Maximum value: %f\n', max_val);

[Steven Lord]

By a strict reading of this question your code does not satisfy the requirements. The < and > operators are built-in functions, specifically lt, < and gt, >.