Recent Activity
Asif Newaz submitted a Comment to Problem 2309. Calculate the Damerau-Levenshtein distance between two strings. i am facing a problem with ur test suite 5. is it correct?
even the built-in matlab function 'edit distance' is giving the result 3.
which i believe is the correct one.
if i am not wrong, according to demarau algorithm - here transposition will not occur.
22 hours and 5 minutes ago |
William submitted a Comment to Problem 45275. Solve Sudoku puzzle step by Hello BinBin,
This is a good problem! But I am wondering: In the test suite, shouldn't the statement "tt = mat2cell(s,[3,3,3],[3,3,3]);" be inside the for-loop?
22 hours and 22 minutes ago |
Jonathan submitted a Comment to Problem 45258. Restricted Addition v2 That's a big part of this challenge. It's not an unintended side effect. Rather, it's a restriction designed to promote more exotic answers.
on 25 Jan 2020 at 2:09 |
Hans Kramer submitted a Comment to Problem 44316. Pandigital Multiples of 11 (based on Project Euler 491) This one took a while.
on 24 Jan 2020 at 12:22 |
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Asif Newaz submitted a Comment to Problem 2561. expand intervals vol.3 problem statement is a little vague
on 22 Jan 2020 at 17:54 |
Paresh yeole submitted a Comment to Problem 967. Split a string into chunks of specified length Problem Description says, function should return n*1, however the solutions are 1*n. Kindly, edit the problem description.
on 22 Jan 2020 at 17:00 |
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Ling Liang submitted a Comment to Problem 615. Nilpotent matrix May I ask what is the definition of Nilpotent matrix. I suppose that is A^k =0 for some k? If I am right, then 0 must be an eigenvalue of A, then there is some issues for the test problems.
on 19 Jan 2020 at 16:12 |
Giovanni Valentini submitted a Comment to Problem 2441. Bernoulli's Equation Bernoulli's law is one of the most charming equations in Physics.
on 19 Jan 2020 at 13:48 |
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Jordan Covert submitted a Comment to Solution 1123836 I believe size(x,2) is equivalent to length(x). Great solution though! Made me realize where I put in too much work.
on 17 Jan 2020 at 23:42 |
Bryan Lambo submitted a Comment to Solution 1707694 Wow this is long haha. Congrats!
on 17 Jan 2020 at 8:18 |
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Bryan Lambo submitted a Comment to Solution 1204954 nice! didn't know about discretize til i saw this solution
on 17 Jan 2020 at 6:37 |
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Bryan Lambo submitted a Comment to Solution 1601773 the problem means to exclude all numbers with the digit 'm'
so example n=20, m=5, you exclude numbers 5 and 15 as these contains the digit m=5.
on 16 Jan 2020 at 8:42 |
Paul Johnson submitted a Comment to Solution 2094182 This is a bit of a Mickey Mouse problem!
on 15 Jan 2020 at 21:10 |
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zaid aldailami submitted a Comment to Problem 2631. Flip the vector from right to left Nice tricky problem
y=x(end:-1:1) I think this might help
on 15 Jan 2020 at 14:48 |
Nikolaos Nikolaou submitted a Comment to Problem 42503. Generating random matrix with given probability mass function Fun problem :)
on 14 Jan 2020 at 19:10 |
Pooja Lalan submitted a Comment to Solution 2091052 The expected output is a column vector containing ALL the bmi values, whereas your code returns a single bmi value i.e. the last one. Hope that helps!
on 14 Jan 2020 at 15:19 |
Dejia Kong submitted a Comment to Problem 1198. Handle to an array of functions what is "cf" in the code? Thanks.
on 14 Jan 2020 at 14:23 |
Aleksandrov Igor submitted a Comment to Problem 11. Back and Forth Rows This code
b=vec2mat(1:n^2,n)
b(2:2:end,:)=fliplr(b(2:2:end,:))
work in Matlab, why it doesn't works on site?
on 14 Jan 2020 at 13:13 |
Nicolas Douillet submitted a Comment to Problem 45262. Remove duplicated vertices This function is actually one basics of any mesh processing librairy / software.
on 13 Jan 2020 at 14:51 |
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Jonathan submitted a Comment to Solution 2090206 Nice solution. I was waiting for someone to use this particular function. I'm surprised its first use was on the matrix version. It takes a little extra work to use it like this.
on 13 Jan 2020 at 13:51 |
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Aleksandrov Igor submitted a Comment to Solution 1812725 [~,b]= max(sum((a.*[.25,.05,.1,.01]),2))
on 13 Jan 2020 at 13:25 |
Ewan submitted a Comment to Solution 2091052 I've got the right values but I've failed the assertion somehow?
on 13 Jan 2020 at 10:15 |
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Asif Newaz submitted a Comment to Problem 45192. check whether a number is a pentatope number test suites have been updated
on 12 Jan 2020 at 14:46 |
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Asif Newaz submitted a Comment to Problem 1174. Wheat on a chessboard pt 2 how to place negative amount of 'wheat' on a chessboard?
the prob is gd but the test suites are unnecessarily jumbled up.
on 12 Jan 2020 at 11:36 |
Manvendra Singh Rajawat submitted a Comment to Solution 2089550 solution test 2 has mistake
y_correct = [-1 -1 -1 -2 -2 -2 -2 5 5 5 5 5 ;
there should be ] at the end
on 12 Jan 2020 at 7:08 |
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Asif Newaz submitted a Comment to Solution 34461 i dont get it..how does it work?
on 12 Jan 2020 at 6:11 |
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Asif Newaz submitted a Comment to Problem 136. Read a Soroban Abacus nic problem
on 12 Jan 2020 at 6:07 |
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Jonathan submitted a Comment to Solution 2089110 I got tired of solving these problems. So, I just wrote a solution that works for everything.
on 11 Jan 2020 at 18:46 |
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Asif Newaz submitted a Comment to Problem 45250. Be happy william,
thanks man.. sorry i didn't go through all that info.
i've updated the problem.it should be okay now
on 11 Jan 2020 at 9:27 |
ren yi xin ren submitted a Comment to Problem 41. Cell joiner function out_str=cellstr_joiner(in_cell, delim)
L=strlength(in_cell);
n=length(L);
summ=L(1);
m=length(delim);
for k=2:n-1
L(k)=summ+L(k);
summ=L(k);
end
L(end)=[];
out_str=cell2mat(in_cell);
for i=1:length(L)
out_str=strcat(out_str(1:L(i)),abs(delim),out_str(L(i)+1:end));
L=L+m;
end
end
who can tell me why my code is wrong.thank you
on 11 Jan 2020 at 3:24 |
Tim submitted a Comment to Problem 45258. Restricted Addition v2 Testing for 'e' when you only want to eliminate 'eval' is rather unfair.
on 10 Jan 2020 at 21:47 |
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William submitted a Comment to Problem 45250. Be happy Asif, Yes, I looked at the information on non-trivial perfect digital invariants. Near the end of that reference, there is a short section entitled "Relation to happy numbers" that indicates that in order for a number to be happy, it needs to be a perfect digital invariant with the value of 1. In this case, the invariant is 8 (or 22 in base-3), so I interprete that as saying that it is a non-trivial PDI, but not happy.
on 10 Jan 2020 at 18:10 |
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Jonathan submitted a Comment to Solution 2088229 I agree, because I like the creativity. Restrictions are the name of the game, though.
on 10 Jan 2020 at 18:04 |
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Jonathan submitted a Comment to Solution 2088294 Nice use of MATLAB functionality.
on 10 Jan 2020 at 18:01 |
Jonathan Agg submitted a Comment to Solution 2088229 It's a shame the check on files and figures prevents this one from working!
on 10 Jan 2020 at 16:59 |
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Jonathan submitted a Comment to Solution 2088105 The first test case is incorrect. The null path (starting and ending at the same place) is a solution. The 1x1 case should have 1 solution.
on 10 Jan 2020 at 15:02 |
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Jonathan Agg submitted a Comment to Solution 2088115 Sorry, I shouldn't have made this trivial change - I don't like not writing to a variable!
on 10 Jan 2020 at 15:00 |
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Jonathan submitted a Comment to Solution 2083150 I like this solution. It shows the basic MATLAB creativity I was looking for!
on 10 Jan 2020 at 14:24 |
Stephan Allgeier submitted a Comment to Problem 93. Calculate the Levenshtein distance between two strings I really like this problem. So far, this is the one I had to think about most. Mostly because the straight-forward recursive implementation is simply not feasible for longer inputs.
on 10 Jan 2020 at 13:31 |
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Nicolas Douillet submitted a Comment to Problem 45261. Query every vertices neighbor indices Pedagogic solution is available in position 2 (commented, same as solution 1 but more explicit thus suboptimal).
on 10 Jan 2020 at 9:40 |
David Motson submitted a Comment to Problem 66. Find the two-word state names @Cody Team, does this need to be a Cody Challenge? It's a pretty rubbish problem
on 10 Jan 2020 at 8:51 |
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Asif Newaz submitted a Comment to Problem 2091. return row and column indices given 2 values which define a range when u submit a problem, keep a sample solution on ur problem statement or in the test suite.
otherwise it becomes very irritating
on 9 Jan 2020 at 5:42 |
Nico Noordam submitted a Comment to Solution 210174 This solution fails on
input = [ 8 2 4 9 5 3 6 7 1
6 3 5 8 1 9 7 2 4
7 1 9 6 2 4 8 5 3
5 8 7 2 9 1 3 4 6
1 4 2 7 3 6 5 8 9
3 9 6 4 8 5 2 1 7
2 6 1 5 4 7 9 3 8
4 7 8 3 6 2 1 9 5
9 5 3 1 7 8 4 6 2 ]
which is the first assertion test with the 9 and 7 on row 2 and 7 exchanged
on 8 Jan 2020 at 8:38 |
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Asif Newaz submitted a Comment to Problem 45250. Be happy william
did u look into the nontrivial PDI portion?
i might have been wrong-i 'll look into it when i get some time. i'm a bit busy now with my new job
on 8 Jan 2020 at 7:29 |
Chul Min Yeum submitted a Comment to Problem 2572. Counting down what is the input 'x'?
on 8 Jan 2020 at 3:58 |
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Bryan Lambo submitted a Comment to Problem 95. Given two strings, find the maximum overlap This did not make me sleep. Most difficult so far, took me some few hours lol.
on 8 Jan 2020 at 0:18 |
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