Kees Roos
11403
11403
Rank3
3
Badges471
471
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Kees Roos submitted Solution 3577120 to Problem 42920. Find the inverse permutation on 7 Nov 2020 |
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Kees Roos submitted Solution 3577100 to Problem 42920. Find the inverse permutation on 7 Nov 2020 |
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Kees Roos submitted Solution 3576825 to Problem 42920. Find the inverse permutation on 7 Nov 2020 |
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Kees Roos submitted Solution 946665 to Problem 19. Swap the first and last columns on 30 Aug 2016 |
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Kees Roos submitted Solution 946653 to Problem 3. Find the sum of all the numbers of the input vector on 30 Aug 2016 |
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Kees Roos submitted Solution 946648 to Problem 2. Make the vector [1 2 3 4 5 6 7 8 9 10] on 30 Aug 2016 |
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Kees Roos submitted Solution 946639 to Problem 1. Times 2 - START HERE on 30 Aug 2016 |
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Kees Roos submitted Solution 84030 to Problem 490. Fastest shortest-path-finder in the west on 8 Oct 2012 |
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Kees Roos liked Solution 86663 on 8 May 2012 |
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Kees Roos submitted a Comment to Solution 86663 After many efforts, on my PC the time for 1000 vertices and 12000 arcs is now less than 1 sec. My solution is a variant of Dijkstra's algorithm. In fact, it surprises me that all shortest paths can be found so fast. I now stop trying to improve my code. After this solution I could see the leading-time solution which is quite different. Very nice!
on 8 May 2012 |
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Kees Roos submitted Solution 86663 to Problem 490. Fastest shortest-path-finder in the west on 8 May 2012 |
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Kees Roos submitted Solution 86254 to Problem 490. Fastest shortest-path-finder in the west on 7 May 2012 |
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Kees Roos submitted Solution 85394 to Problem 490. Fastest shortest-path-finder in the west on 3 May 2012 |
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Kees Roos submitted Solution 85186 to Problem 490. Fastest shortest-path-finder in the west on 3 May 2012 |
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Kees Roos submitted Solution 84776 to Problem 145. Increment a number, given its digits on 2 May 2012 |
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Kees Roos submitted Solution 84731 to Problem 490. Fastest shortest-path-finder in the west on 2 May 2012 |
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Kees Roos submitted a Comment to Solution 84550 Dear Alfonso, thanks for doing this! Size now refers to msec's? I will now try to improve my code.
Is there a way to reproduce the new size on my PC?
on 2 May 2012 |
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Kees Roos submitted Solution 84550 to Problem 490. Fastest shortest-path-finder in the west on 2 May 2012 |
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Kees Roos submitted Solution 82322 to Problem 490. Fastest shortest-path-finder in the west on 1 May 2012 |
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Kees Roos submitted Solution 82321 to Problem 490. Fastest shortest-path-finder in the west on 1 May 2012 |
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Kees Roos submitted Solution 82320 to Problem 490. Fastest shortest-path-finder in the west on 1 May 2012 |
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Kees Roos submitted Solution 81317 to Problem 490. Fastest shortest-path-finder in the west on 1 May 2012 |
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Kees Roos submitted Solution 81316 to Problem 490. Fastest shortest-path-finder in the west on 1 May 2012 |
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Kees Roos submitted Solution 81315 to Problem 490. Fastest shortest-path-finder in the west on 1 May 2012 |
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Kees Roos submitted Solution 81272 to Problem 490. Fastest shortest-path-finder in the west on 1 May 2012 |
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Kees Roos submitted Solution 81019 to Problem 490. Fastest shortest-path-finder in the west on 1 May 2012 |
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Kees Roos submitted Solution 80891 to Problem 490. Fastest shortest-path-finder in the west on 1 May 2012 |
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Kees Roos submitted Solution 80888 to Problem 490. Fastest shortest-path-finder in the west on 1 May 2012 |
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Kees Roos submitted Solution 84053 to Problem 32. Most nonzero elements in row on 30 Apr 2012 |
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Kees Roos submitted Solution 84050 to Problem 11. Back and Forth Rows on 30 Apr 2012 |
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Kees Roos submitted Solution 84046 to Problem 167. Pizza! on 30 Apr 2012 |
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Kees Roos submitted Solution 84045 to Problem 25. Remove any row in which a NaN appears on 30 Apr 2012 |
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Kees Roos submitted Solution 84042 to Problem 17. Find all elements less than 0 or greater than 10 and replace them with NaN on 30 Apr 2012 |
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Kees Roos submitted Solution 84040 to Problem 17. Find all elements less than 0 or greater than 10 and replace them with NaN on 30 Apr 2012 |
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Kees Roos submitted a Comment to Solution 84030 When I run test problem 5 with my code on my PC the output is
Time (ms)
1.0e+04 *
0.006900000000000 0.657700000000000 1.714100000000000
In total this is well below 20 sec. It may be not the leading time, but it is kind of frustratng that the response of Cody is that the "server encountered an error". There is no error in the code; I am sure because I compared my solutions with those obtained by using the 'graphallshortestpaths.m' routine in the Bioinformatics toolbox of Matlab. I would like to know why I get no valid response from Cody.
on 30 Apr 2012 |
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Kees Roos submitted a Comment to Solution 81313 Currently my code needs about 12 seconds for finding all shortest paths if the number of nodes is 1000 and the number of arcs 12000. Of course, I verified that the code is correct. But since I have no entrance to the last test problem, it is not clear why the server is not able to handle it. At least, I would be glad to be able to compare 'my' times with the leadng time.
on 25 Apr 2012 |
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Kees Roos received Promoter badge for Solution 78770 on 18 Apr 2012 |
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Kees Roos submitted Solution 78770 to Problem 283. Give the Shortest Path Through The Maze on 18 Apr 2012 |
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Kees Roos submitted Solution 78592 to Problem 283. Give the Shortest Path Through The Maze on 18 Apr 2012 |
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Kees Roos submitted Solution 78145 to Problem 1. Times 2 - START HERE on 18 Apr 2012 |
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Kees Roos submitted Solution 77857 to Problem 548. How many palindromes? on 17 Apr 2012 |
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Kees Roos submitted Solution 77849 to Problem 548. How many palindromes? on 17 Apr 2012 |
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Kees Roos submitted Solution 77769 to Problem 51. Find the two most distant points on 17 Apr 2012 |
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Kees Roos submitted Solution 77765 to Problem 54. Maximum running product for a string of numbers on 17 Apr 2012 |
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Kees Roos submitted Solution 77743 to Problem 45. Make a Palindrome Number on 17 Apr 2012 |
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Kees Roos submitted Solution 77735 to Problem 23. Finding Perfect Squares on 17 Apr 2012 |
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Kees Roos submitted a Comment to Solution 76528 I now understand. It is a pity that the Cody system does not report that the smaller problems are solved correctly. I guess the results you mention for large networks can be obtained only by commercial codes. I tried the code in the Bioinformatic toolbox. This would work, but needs a license.
on 17 Apr 2012 |
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Kees Roos submitted Solution 77590 to Problem 76. De-dupe on 17 Apr 2012 |
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Kees Roos submitted Solution 77347 to Problem 57. Summing Digits within Text on 16 Apr 2012 |
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Kees Roos submitted Solution 77101 to Problem 48. Making change on 16 Apr 2012 |
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