結果:

380 - 390 / 390

Kyle
最後のアクティビティ: 2019 年 10 月 28 日

Cody question help: Remove all the words that end with "ain"

I have been stuck in the Cody question: Problem 31. Remove all the words that end with "ain"

http://www.mathworks.com/matlabcentral/cody/problems/31-remove-all-the-words-that-end-with-ain

for the whole afternoon. My codes below passed the first two tests but failed in the third one, because my codes cannot separate "" and ain. Anyone could help?

function s2 = remAin(s1)
s1_cell = strread(s1, '%s');
[s1_cell{find(not(cellfun('isempty', regexp(s1_cell, '\w*ain\>'))) == 1)}] = deal(' ');
s2 = strjoin(s1_cell');
s2 = strrep(s2, sprintf('%c%c%c', 32,32,32), sprintf('%c%c', 32,32));
if s2(end) == ' ' && s2(end-1) == ' '
      s2(end) = [];
end
end

Cody

Sadi Altamimi
最後のアクティビティ: 2015 年 8 月 19 日

Cody Problem 33 | Leading answer is in Chinese ?!

Salam,

While I was playing with Cody, I found one interesting question that asked to write MATLAB function to create times-table (can be found here: http://bit.ly/1cWZGGM ). The question itself was easy, but I had problems to figure out how could someone solve this problem with compact code of size 10 !!

After I've checked the leading answer, it seems to be written in Chinese not in MATLAB :)

Here is the answer:

function m = timestables(n)
  regexp '' '(?@A=repmat([1:n]'',1,n);m=A.*A'';)'
end

Could anyone translate this to me so that I can use it in my future attempts ? :P

Regards.

cody

Cody

Bradley Stiritz
最後のアクティビティ: 2020 年 8 月 30 日

How are ninja solutions even possible in Cody?

In a previous Q & A, Jan Simon pointed to Cody: Sum 1:2^n. The current leading solution to that problem has node-count (or more simply, "length") 10. Apparently, 10 is the minimal length (per the official length-function on File Exchange) of any function taking input & generating output:

function y = test_cody_solution(x)
    y = x;
end

Per Cody instruction examples, additional computation within a function definition increases the solution length. For example, both of the following functions have length 12:

function y = test_cody_solution(x)
    y = [x];
end
function y = test_cody_solution(x)
    y = x+1;
end

My question is: what kinds of ninja-style coding idioms even exist in MATLAB which actually perform definite computation but at the same time do not increase the node-count above 10? I'm not able to imagine what could be going on in order for someone to solve a given non-trivial Cody puzzle in length 10 or 11? IOW, without respect to any particular Cody problem, could someone please give an example of a non-trivial function which somehow comes in at or just above the absolute lower bound? Any explanation of the magic would be appreciated as well.

Thanks, Brad

cody

Cody

ricardo gunawan
最後のアクティビティ: 2013 年 7 月 15 日

Problem 9. Who Has the Most Change?

function b = most_change(a)
a(:,1)=a(:,1)*0.25;
a(:,2)=a(:,2)*0.1;
a(:,3)=a(:,3)*0.05;
a(:,4)=a(:,4)*0.01;
d=sum(a,2);
c=max(d);
for i=1:length(d)
  if d(i)==c
      b=i;
  end
end

i got wa please explain idont understand

Cody

tqy
最後のアクティビティ: 2012 年 8 月 20 日

Anyone know what does the Problem 58. Tic Tac Toe FTW in cody mean?

Given a tic tac toe board:

1 represents X

0 represents empty.

-1 represents O

It is X's move. If there is an immediate win possibility, choose a square for an immediate win. Otherwise return 0.

Return absolute index of the square of choice. If multiple square are valid, return them in order.

Example:

 Input  a = [ 1  0  1
             -1  1  0
              0 -1 -1]
 Output wins is [4 8]

Can anyone explain it in detail?

I'm confused with the sentence I marked ans bold style.

Thanks a lot~~~

cody

Cody

Cris Luengo
最後のアクティビティ: 2012 年 8 月 14 日

Unlocking answers to last Cody problem?

I've written a valid answer to the last Cody problem, but it is not even close to the best answer. I have no idea how they made this short answer. To unlock it I need to solve another Cody question, but there are none left... :(

Anybody know how to unlock the last question?

cody

Cody

Marco Castelli
最後のアクティビティ: 2020 年 6 月 9 日

Cody: Problem 30 - function Sortrows

Hi,

i'm "solving" number 30 cody's problem.

I think to solve that whit sortrows function.

If I have a z vector:

j = sqrt(-1);
z = [-4 6 3+4*j 1+j 0];

my funtion is:

function z = complexSort(z)
    z(2,:)=sqrt(real(z).^2+imag(z).^2);
    z=sortrows(z',-2);
    z=z(:,1);
end

End it return the result

z =

   6.0000             6.0000          
   3.0000 - 4.0000i   5.0000          
  -4.0000             4.0000          
   1.0000 - 1.0000i   1.4142          
        0                  0

The question is: why imagine part in input is positive e sortrows trasform it in negative?

best regards

Marco

Cody

bym
最後のアクティビティ: 2020 年 2 月 10 日

What do you think of Cody, new service for MATLAB Central

What do you think of Cody? I'm interested in your comments

cody

Fun

Walter Roberson
最後のアクティビティ: 21分前

MATLAB in unexpected places

This topic is for unexpected or bizarre or humorous references to MATLAB. Specific citations would be appreciated.

Fun

Paulo Silva
最後のアクティビティ: 2024 年 5 月 10 日

What matlab easter eggs do you know?

Please post the easter eggs that you have found so far if they aren't already posted by someone else.

Let's try to make a good Matlab easter egg list because it seems that there isn't one.

What should be posted:

Unexpected but intentional behaviour
Special things that the programmers left for us to discover
Extra code inside a function that can be used for other purposes
Hidden pictures and audio clips

What shouldn't be posted:

Repeated Easter Eggs, if someone already posted it please don't repeat
Bugs in functions that cause trouble and might be fixed in later versions
Matlab games that come with the program unless they aren't mentioned in the documentation (the games are in the other demos, try the xpbombs and fifteen, you can even see the code for both games)

380 - 390 / 390