Question

using this array

Lure dueren suuj (COM 94 97 95 19 91 88 95 87 90 72 78 60 98 87 81 79 76 69 192 80 77 73 78 70 80 89 81 186 94 901 b. Find the lowest grade in Math subject using for loop and if statement: dat in local variable

I need to create a user created function in Matlab that does the following

I have this so far but I'm so lost

could you please make this with comments on what the codes do

Answer 1

function firstplace_student = firstplace(gr)
   x_firstplace = 0; % intialize index of student with highest grade to 0
   x_sum = 0; %initialize student highest sum of grades to 0
   [rowx, colx] = size(gr); %find size of input
   for r = 1:rowx %for each student
       rowsum = sum(gr(r, :)); %find the sum of all grades in that row i.e for the student
       if rowsum >= x_sum % if the sum of row is greater than the current highest,
           x_sum = rowsum; %save the highest
           x_firstplace = r; %save the student number
       end
   end
   firstplace_student= x_firstplace; %assign highest student with highest sum of grades to output variable
end