Activity for trichoplax
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Edit | Post #287403 | Initial revision | — | over 2 years ago |
| Article | — |
Shortest representation in generalised Roman numerals [FINALIZED] Posted Given an integer, find its shortest representation in generalised Roman numerals. Since there is more than one way to generalise, only the definition shown below applies to this challenge. Definition The digits used are the same as for standard Roman numerals, with the same values: Dig... (more) |
— | over 2 years ago |
| Edit | Post #287377 |
Post edited: Mark as finalized |
— | over 2 years ago |
| Edit | Post #287386 | Initial revision | — | over 2 years ago |
| Question | — |
Digit antitranspose Convert a matrix or grid of digits to its antitranspose. For a square matrix , this is its reflection in its antidiagonal. More generally, for a rectangular matrix, this is its reflection in its skew diagonal. Less formally, the line to reflect in is from South West to North East, at 45 degrees re... (more) |
— | over 2 years ago |
| Edit | Post #287377 |
Post edited: Specify input is rectangular |
— | over 2 years ago |
| Edit | Post #287376 |
Post edited: Mark as finalized |
— | over 2 years ago |
| Edit | Post #287381 | Initial revision | — | over 2 years ago |
| Question | — |
Encode with ROT13.5 Given a string, convert all of its letters using ROT13, and all of its digits using ROT5. This is sometimes referred to as ROT13.5. Input - A sequence of printable ASCII characters (character codes 32 to 126 inclusive) - This may be a string or any data structure of characters Output - A seq... (more) |
— | over 2 years ago |
| Edit | Post #287377 |
Post edited: Add more test cases |
— | over 2 years ago |
| Edit | Post #287377 |
Post edited: Move example out of bullet point list |
— | over 2 years ago |
| Edit | Post #287376 |
Post edited: Add hope for explanations |
— | over 2 years ago |
| Edit | Post #287377 | Initial revision | — | over 2 years ago |
| Article | — |
Digit antitranspose [FINALIZED] Now posted: Digit antitranspose Convert a matrix or grid of digits to its antitranspose. For a square matrix , this is its reflection in its antidiagonal. More generally, for a rectangular matrix, this is its reflection in its skew diagonal. Less formally, the line to reflect in is from Sou... (more) |
— | over 2 years ago |
| Edit | Post #287376 |
Post edited: Slight adjustment to a test case |
— | over 2 years ago |
| Edit | Post #287376 |
Post edited: Amend test cases |
— | over 2 years ago |
| Edit | Post #287376 | Initial revision | — | over 2 years ago |
| Article | — |
Encode with ROT13.5 [FINALIZED] Now posted: Encode with ROT13.5 Given a string, convert all of its letters using ROT13, and all of its digits using ROT5. This is sometimes referred to as ROT13.5. Input - A sequence of printable ASCII characters (character codes 32 to 126 inclusive) - This may be a string or any data str... (more) |
— | over 2 years ago |
| Edit | Post #287238 |
Post edited: Remove trailing comma from test cases |
— | over 2 years ago |
| Edit | Post #287329 |
Post edited: Conclude switching to 0-bits for knights would be longer |
— | over 2 years ago |
| Edit | Post #287329 |
Post edited: Forgot to update Rust Playground link |
— | over 2 years ago |
| Edit | Post #287329 |
Post edited: Combine bitmask pairs into single applications |
— | over 2 years ago |
| Edit | Post #287329 |
Post edited: No need to stop knights moving off the top of bottom of the board, only the sides |
— | over 2 years ago |
| Edit | Post #287341 |
Post edited: Mark code block as text to avoid syntax highlighting making the first letter bold |
— | over 2 years ago |
| Edit | Post #287238 |
Post edited: Make test case explanations a hidden section |
— | over 2 years ago |
| Suggested Edit | Post #287341 |
Suggested edit: Mark code block as text to avoid syntax highlighting making the first letter bold (more) |
helpful | over 2 years ago |
| Edit | Post #287329 |
Post edited: Further golfing |
— | over 2 years ago |
| Edit | Post #287329 | Initial revision | — | over 2 years ago |
| Answer | — |
A: Knight safe squares Rust, 236 184 166 142 bytes ```rust |i:u64|{let s=0x101010101010101;let(a,b,c,d)=(i&252s,i&254s,i&127s,i&63s);(i|a>6|c>>15|b>>17|a>>10).countzeros()} ``` All test cases on Rust Playground Takes input as a 64 bit unsigned integer where each 1-bit represents a knight and each 0-bit represent... (more) |
— | over 2 years ago |
| Edit | Post #287323 |
Post edited: Mark as finalized |
— | over 2 years ago |
| Edit | Post #287324 | Initial revision | — | over 2 years ago |
| Question | — |
Sort letters by height Given a sequence of lower case letters, sort them into order of height. Heights The heights of letters are dependent on font, so for this challenge the height order to be used is as defined below: ```text acemnorsuvwxz t i bdfghklpqy j ``` Letters on the same line are defined to be ... (more) |
— | over 2 years ago |
| Edit | Post #287323 |
Post edited: Add test case |
— | over 2 years ago |
| Edit | Post #287323 |
Post edited: Add test cases |
— | over 2 years ago |
| Edit | Post #287323 |
Post edited: List same height letters in alphabetical order |
— | over 2 years ago |
| Edit | Post #287323 |
Post edited: Allow different formats for input and output |
— | over 2 years ago |
| Edit | Post #287323 |
Post edited: Fix test case format |
— | over 2 years ago |
| Edit | Post #287323 |
Post edited: Modify sort order and clarify output |
— | over 2 years ago |
| Edit | Post #287323 | Initial revision | — | over 2 years ago |
| Article | — |
Sort letters by height [FINALIZED] Now posted: Sort letters by height Given a sequence of lower case letters, sort them into order of height. Heights The heights of letters are dependent on font, so for this challenge the height order to be used is as defined below: ```text acemnorsuvwxz t i bdfghklpqy j ``` L... (more) |
— | over 2 years ago |
| Edit | Post #287153 |
Post edited: Mark as finalized |
— | over 2 years ago |
| Edit | Post #287321 | Initial revision | — | over 2 years ago |
| Question | — |
Connect the corners without 4 in a row Connect opposite corners of a rectangle of characters without putting 4 characters in a row. Input - Two numbers, W and H, representing the width and height of the rectangle - Each number will be in the range 2 to 70 Output - A rectangular grid of characters, of width W and height H - You m... (more) |
— | over 2 years ago |
| Edit | Post #287153 |
Post edited: Add link to validator |
— | over 2 years ago |
| Edit | Post #287153 |
Post edited: Remove accidental link markdown |
— | over 2 years ago |
| Edit | Post #287153 |
Post edited: Improve examples |
— | over 2 years ago |
| Edit | Post #287153 |
Post edited: Remove redundant examples |
— | over 2 years ago |
| Edit | Post #287153 |
Post edited: Golf the output spec |
— | over 2 years ago |
| Edit | Post #287319 |
Post edited: Remove clashing word "explanation" |
— | over 2 years ago |
| Edit | Post #287154 |
Post edited: Mark as finalized |
— | over 2 years ago |