Find max value in each column of a 6x5 matrix without using built in matlab functions.

My command window for one of the columns is underneath code and i just cannot figure out how to get the max value in each column. i have gotten down to having columnval= each number in each column but when cant figure out how to go about getting the max because what ive tried ends up giving me same maxval for every columnval.

A=randi(100,6,5) 
for columns=1:5
    column=A(:,columns)
    maxvalue=0;
    for columndown=1:6
          columnval=column(columndown,:)
        if columnval>maxvalue
            maxvalue=columnval;     
        end
    end
end

column =

6

18

67

34

90

12

columnval =

6

columnval =

18

columnval =

67

columnval =

34

columnval =

90

columnval =

12

[Walter Roberson]

https://www.mathworks.com/matlabcentral/answers/38787-what-can-be-programmed-without-any-built-in-functions

[Josh Rudbart]

i think professor just specifically wants us not to use max function

Answer 1

[Mauro Fusco]

Hi,

based on your code a few modifications will make it work:

A=randi(100,6,5)
maxvalue = zeros(1,5);
for columns=1:5
    column=A(:,columns);
    
    for columndown=1:6
          columnval=column(columndown);
        if columnval>maxvalue(columns)
            maxvalue(columns)=columnval;     
        end
    end
end

maxvalue %show the row with max value for each column :-)

[Josh Rudbart]

thank you