Timeline for Is there a single straight line in the matrix?
Current License: CC BY-SA 4.0
25 events
| when toggle format | what | by | license | comment | |
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| Jun 17, 2021 at 15:35 | comment | added | Jonah | Rollback! Thanks @xash | |
| Jun 17, 2021 at 15:34 | history | rollback | Jonah |
Rollback to Revision 9
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| Jun 17, 2021 at 15:16 | comment | added | xash |
Fails with 1100 1100 0000 0000 – which suggests that it is the same algorithm as theorist's answer, that also fails with this case. :-)
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| Jun 17, 2021 at 14:45 | history | edited | Jonah | CC BY-SA 4.0 |
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| Jun 17, 2021 at 14:43 | comment | added | Jonah | I'm squaring after the matrix multiplication, at which point the matrix will have entries > 1. If you remove the squaring the 2nd to last test case fails. That said, I still need to find a proof that this method is guaranteed to work. | |
| Jun 17, 2021 at 13:56 | comment | added | caird coinheringaahing♦ | Why do you need to square element wise? The matrix always has 0 or 1 in it, and squaring either of those (or any product involving those) does nothing | |
| Jun 17, 2021 at 12:33 | history | edited | Jonah | CC BY-SA 4.0 |
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| Jun 17, 2021 at 5:47 | history | edited | Jonah | CC BY-SA 4.0 |
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| Jun 17, 2021 at 5:28 | history | rollback | Jonah |
Rollback to Revision 6
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| Jun 17, 2021 at 5:16 | history | edited | Jonah | CC BY-SA 4.0 |
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| Jun 17, 2021 at 5:03 | history | edited | Jonah | CC BY-SA 4.0 |
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| Jun 17, 2021 at 5:00 | comment | added | Jonah |
@Bubbler Fixed. I really wanted to find a solution with using diagonal /. sums, which produce a string of # ones and zero elsewhere iff valid input. But golfing that condition was cumbersome. Maybe you can make it work.
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| Jun 17, 2021 at 4:57 | history | undeleted | Jonah | ||
| Jun 17, 2021 at 4:57 | history | edited | Jonah | CC BY-SA 4.0 |
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| Jun 17, 2021 at 4:36 | history | deleted | Jonah | via Vote | |
| Jun 17, 2021 at 4:35 | comment | added | Jonah | Ugh, nice catch. | |
| Jun 17, 2021 at 4:35 | comment | added | Bubbler |
Fails with inputs like 1101 0010 0000 0000.
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| Jun 17, 2021 at 4:32 | history | undeleted | Jonah | ||
| Jun 17, 2021 at 4:31 | history | edited | Jonah | CC BY-SA 4.0 |
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| Jun 17, 2021 at 3:41 | history | deleted | Jonah | via Vote | |
| Jun 17, 2021 at 3:38 | history | undeleted | Jonah | ||
| Jun 17, 2021 at 3:38 | history | edited | Jonah | CC BY-SA 4.0 |
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| Jun 17, 2021 at 3:13 | history | deleted | Jonah | via Vote | |
| Jun 17, 2021 at 3:00 | history | edited | Jonah | CC BY-SA 4.0 |
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| Jun 17, 2021 at 2:52 | history | answered | Jonah | CC BY-SA 4.0 |