Problem 33. Create times-tables

good problem

I agree

moderately easy nice.

Challenging

That one was unique

m = [1:n]'*[1:n];

K = kron(1:n,1:n)
m = reshape(K,n,n)

Good Problem

m = (1:n)'*(1:n);

m = [1:n]'*[1:n];

what is the true leading solution?

thanks dawg

I think the error is pretty clear. line3: column=1:1:n; line4:row=1:1:n.
besides, 1:n just fine, the "1" in the middle is quite not necessary.

what if i use 1:n and 1:1:n?both are same right? The step size is 1 for both the case. Tried what you said but Test suit fails again

two equal sign in line 3&4 are missed: this is fatal error, fix that, in my computer seems work fine. and 1:n is another problem, it can pass even you don't change it. nontheless, 1 in the middle is redundant. it CAN be removed, not like you have to.

How could you solve this by size 10?

hahahaha,hello~~

very easy

nice

On my matlab this code works for all the test, but here it fails, why?
m = reshape(1:n^2,[n,n])';

Moreover How can I see better solutions of the problem that I solved, so I can improve my Matlab skills?

Thank you very much for your attention

Sorry, I missed a ;-)

Yeah,I did it.

Test solution 2 is incorrect, should be:

y_correct = [1 2 3; 2 4 6; 3 6 9]

current solution isn't even square...

The test suite is broken for this problem.

The second test should say y_correct = [1 2 3; 2 4 6;3 6 9];

can someone please tell me what I've done wrong here pls. Thanks

You've done nothing wrong; the solution to Test Suite #2 is incorrect.

No need to apply loop here, m=[1:n]'*[1:n] works fine.
function m = timestables(n)
m=(1:n)'*(1:n);
end

test # 2 is wrong, as it should be a 3x3 matrix,
y_correct for x=3 is:
[1 2 3; 2 4 6; 3 6 9]

Test nr. 2 seems not right: the soluton for x= 3 should be:
y_correct = [1 2 3; 2 4 6; 3 6 9]

lol

I tried on my matlab, it works.

this solution is correct... the answer for test #2 is incorrect.

Nice question. Good reminder how vector multiplication works.

Good

Pretty Cool

Duh! Thanks for reminding me how matrix multiplication works

good to learn with matrix scalar multiplication

it's correct for any value !!!!!

What, this is so weird!!!! Nice job

Missing semicolons...

l just wonder is it a real boring thing (times table),that we need to program it,for exam.12*12=144,almost everybody who atteded high school can answer,2^10=1024;25*25=625,13*13=169;14*14=196;15*15=225;it is such an easy thing that we needn't to make a table,we can calculate it out once we see such an multiplication

like your solution its very concise but there is one problem for me you have used '* for multiplication, can you please tell why?

function m = timestables(n)
for i=1:n
for j=1:n
m(i,j)=i*j;
end
end
%apparently this doesn't work even though MatLab says it works for any size

Brilliant!

After the solution I come up with ends up in the middle of the graph I feel disappointed. But then I learn there's a command that does something I didn't know about and I feel better about myself because I learned a new command!

amazing!

very elegant :)

nice :)

interesting approach, very smart!