Write a function that gives a tree with one input

Hello,

I have no idea of how to do something like that i tried to sum but you can't do so with string thanks

Answer 1

[Les Beckham]

n = 9;
tree(9);

        *
       ***
      *****
     *******
    *********
   ***********
  *************
 ***************
*****************

function tree(n)
    for i = 1:n
        fprintf('%s', repmat(' ', 1, n-i));
        fprintf('%s\n', repmat('*', 1, 1 + 2*(i-1)))
    end
end

[Walter Roberson]

Note that this is a homework question

[Les Beckham]

mea culpa

I got carried away.

Answer 2

[Jan]

n = 9;
disp(char(10 * (abs(-n+1:n-1) < (1:n).') + ' '))

        *        
       ***       
      *****      
     *******     
    *********    
   ***********   
  *************  
 *************** 
*****************

Or with a function:

affAbre(n)

function affAbre(n)
s = repmat(' ', 1, 2*n-1);
for k = 0:n-1
   s(n-k:n+k) = '*';
   disp(s)
end
end

Come on. Be a little bit creative. Try to understand the given solutions and invent a new one.

Of course, I assume that this is a homework question and posting solutions does not help you. I hop, the different approachs motivate you to learn Matlab.

[Joe Ronald]

Well your right but i was just stuck tried every way i could think about :/

Thanks

[Jan]

Are you unstuck now?

Did you understand, how my first suggestion is working?

Answer 3

[Joe Ronald]

thanks for the answers