At one time or another, we all had to memorize boring times tables. 5 times 5 is 25. 5 times 6 is 30. 12 times 12 is way more than you think.
With MATLAB, times tables should be easy! Write a function that outputs times tables up to the size requested.
Example:
Input n = 5
Output m is [ 1 2 3 4 5
2 4 6 8 10
3 6 9 12 15
4 8 12 16 20
5 10 15 20 25 ]Solution Stats
Problem Comments
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10 older comments
Franek
on 29 May 2013
Cześć
Alfonso Nieto-Castanon
on 10 Jun 2015
it would seem that the recently added test#2 is incorrectly defined
Jyotsna mallela
on 10 Jun 2015
Agree with Mr.Alfonso ; Test#2 is incorrectly defined
Akshay M
on 11 Jun 2015
Agree with Mr.Alfonso ; Test#2 is incorrectly defined
Alea88
on 30 Jun 2015
Agree with Mr.Alfonso ; Test#2 is incorrectly defined
Mission:Tall
on 2 Jul 2015
Agree with Mr.Alfonso ; Test#2 is incorrectly defined
Terry
on 3 Jul 2015
Apparently the Cody Team can't make a times table. :-p
Ramoflaple
on 4 Jul 2015
Agree with the above
Ian Riley
on 21 Jul 2015
For those who wish to solve anyway: Make a correct solution that works with tests 1 and 3, and then hardcode an if with n==3 at the end to make solution 2 work
Santosh Kasula
on 31 Jul 2015
Sorry for the typo, I just fixed the test#2.
DCN
on 26 May 2017
Good question!
Loris Chavée
on 16 Jul 2017
How can people solve problem like this with a size 10 ?
Kavithaa
on 30 Dec 2017
Easy one
Solution Comments
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4 Comments
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1 older comment
durga sadasivuni
on 7 Jun 2018
Please help me out,cant find out the error
bainhome
on 7 Jun 2018
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.
durga sadasivuni
on 9 Jun 2018
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
bainhome
on 9 Jun 2018
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.
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2 Comments
Haipeng Wang
on 23 May 2018
How could you solve this by size 10?
Zuxin Jin
on 29 May 2018
hahahaha,hello~~
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1 Comment
SIVAPRAKASH DANABALASINGAM
on 10 Jan 2017
very easy
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1 Comment
TAYALAN SIVALINGAM
on 29 Dec 2016
nice
2 players like this solution
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1 Comment
Luca Fenzi
on 2 Sep 2016
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
1 player likes this solution
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1 Comment
Marian Kind
on 18 Dec 2015
Sorry, I missed a ;-)
1 player likes this solution
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1 Comment
Yoshimasa Nakatani
on 10 Dec 2016
(^^)v
1 player likes this solution
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1 Comment
David Schafer
on 29 Jul 2015
Test solution 2 is incorrect, should be:
y_correct = [1 2 3; 2 4 6; 3 6 9]
current solution isn't even square...
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1 Comment
Michael Kasa
on 22 Jul 2015
The test suite is broken for this problem.
1 player likes this solution
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1 Comment
David Klee
on 8 Jul 2015
The second test should say y_correct = [1 2 3; 2 4 6;3 6 9];
1 player likes this solution
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2 Comments
Nicholas Hortance
on 7 Jul 2015
can someone please tell me what I've done wrong here pls. Thanks
James
on 8 Jul 2015
You've done nothing wrong; the solution to Test Suite #2 is incorrect.
1 player likes this solution
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1 Comment
Francisco Salgado
on 26 Jun 2015
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]
2 players like this solution
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1 Comment
Francisco Salgado
on 26 Jun 2015
Test nr. 2 seems not right: the soluton for x= 3 should be:
y_correct = [1 2 3; 2 4 6; 3 6 9]
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1 Comment
Artyom Emelyanenko
on 17 Jun 2015
lol
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1 Comment
Yutong Yin
on 10 Jun 2015
I tried on my matlab, it works.
1 player likes this solution
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1 Comment
Brandon Popper
on 9 Jun 2015
this solution is correct... the answer for test #2 is incorrect.
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1 Comment
Christian
on 4 Mar 2015
Nice question. Good reminder how vector multiplication works.
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1 Comment
AGAM GUPTA_786
on 1 Feb 2015
Good
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1 Comment
Juan Moreta
on 7 Jan 2015
Pretty Cool
1 player likes this solution
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2 Comments
Wesley Allen
on 18 Mar 2014
Duh! Thanks for reminding me how matrix multiplication works
Anand
on 8 Sep 2014
good to learn with matrix scalar multiplication
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1 Comment
Hamza
on 20 Nov 2013
it's correct for any value !!!!!
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1 Comment
Carlos Adrian Vargas Aguilera
on 2 Jul 2013
What, this is so weird!!!! Nice job
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1 Comment
Hywel Owen
on 28 Feb 2013
Missing semicolons...
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1 Comment
sea knowledge
on 11 Dec 2012
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
1 player likes this solution
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1 Comment
Hassan Javaid
on 3 Aug 2013
like your solution its very concise but there is one problem for me you have used '* for multiplication, can you please tell why?
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1 Comment
Brian
on 13 Jul 2015
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
2 players like this solution
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3 Comments
Ryan
on 5 Dec 2012
Brilliant!
Rodolfo
on 11 Mar 2013
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!
Vishwasrao
on 7 May 2013
amazing!
18 players like this solution
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2 Comments
Yvan Lengwiler
on 27 Feb 2012
very elegant :)
SBAIH Nizar
on 18 Sep 2013
nice :)
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38 players like this problem