MATLAB: I need help writing a program to pick the largest number in a list

programming

I was given:
 clc;                                            
 n=input('how many numbers are in your list?');  
 for i=1:n
    y=['enter a number', num2str(i)];            
    disp (y)
    x(i)=input('');
end
and the list of numbers to plug in. I need to finish the program so it will choose the largest from my list. This is what I have so far:
 if x(i)<=y
    [newx,newy]=swap (x,y)
    newx=y
    newy=x
else x(i)>y
    disp('The largest number in the list is')
end
This program runs but does not give me a single value. What should i do to fix it?

Best Answer

Try this:
my_max = -inf;
for k=1:length(y) % y is your array
  if my_max < y(k)
      my_max = y(k);
  end 
end
disp(my_max)
This is computationally expensive though. You can find the maximum easily with the function max:
my_max = max(y'); %y is your array. If it is already a column vector, you do not need to transpose it
Related Question