# RogerBW's Blog

 The Weekly Challenge 260: Uniquely Rank 17 March 2024 I’ve been doing the Weekly Challenges. The latest involved multi-level counts and word ordering. (Note that this ends today.) Task 1: Unique Occurrences You are given an array of integers, `@ints`. Write a script to return 1 if the number of occurrences of each value in the given array is unique or 0 otherwise. For me the most obvious way was to create a hash of counts, then uniquify those counts and see if the list size shrank. Raku: ``````sub uniqueoccurrences(@a) { my %c; `````` Create a map of integers to counts. `````` @a.map({%c{\$_}++}); `````` Put those counts in a set, and see if it's the same size as the map. `````` if (Set(%c.values).elems == %c.elems) { return 1; } else { return 0; } } `````` Task 2: Dictionary Rank You are given a word, `\$word`. Write a script to compute the dictionary rank of the given word. Again the algorithm seemed very clear: generate all permutations of the letters uniquify and sort them look for the original word in the ordered list. In PostScript (relying heavily on my library extensions: ``````/dictionaryrank { 0 dict begin /a exch def `````` Copy the length of the input string; we'll be using that repeatedly later. `````` /l a length def /d 0 dict def `````` Permute the characters of `a`, placing the resultant strings as dictionary keys in `d` to ensure they're unique. `````` a s2a { a2s d exch true put } permute `````` Those strings have become PostScript name objects, so convert them back to strings, before sorting and iterating the list. `````` d keys { l string cvs } map quicksort enumerate.array { `````` The enumerator gives us `[ index value ]` as a single stack object, so break that out onto the stack. `````` aload pop `````` If the value matches the original string, `````` a deepeq { `````` add 1 to the current index and exit. `````` 1 add exit } { `````` Otherwise pop the index since we won't be using it. `````` pop } ifelse } forall end } bind def `````` Full code on github. Comments on this post are now closed. If you have particular grounds for adding a late comment, comment on a more recent post quoting the URL of this one. Search 10 per page 20 per page 50 per page 100 per page Archive Tags 1920s 1930s 1940s 1950s 1960s 1970s 1980s 1990s 2000s 2010s 3d printing action advent of code aeronautics aikakirja anecdote animation anime army astronomy audio audio tech base commerce battletech beer boardgaming book of the week bookmonth chain of command children chris chronicle church of no redeeming virtues cold war comedy computing contemporary cornish smuggler cosmic encounter coup covid-19 crime crystal cthulhu eternal cycling dead of winter doctor who documentary drama driving drone ecchi economics en garde espionage essen 2015 essen 2016 essen 2017 essen 2018 essen 2019 essen 2022 essen 2023 existential risk falklands war fandom fanfic fantasy feminism film firefly first world war flash point flight simulation food garmin drive gazebo genesys geocaching geodata gin gkp gurps gurps 101 gus harpoon historical history horror hugo 2014 hugo 2015 hugo 2016 hugo 2017 hugo 2018 hugo 2019 hugo 2020 hugo 2021 hugo 2022 hugo 2023 hugo 2024 hugo-nebula reread in brief avoid instrumented life javascript julian simpson julie enfield kickstarter kotlin learn to play leaving earth linux liquor lovecraftiana lua mecha men with beards mpd museum music mystery naval noir non-fiction one for the brow opera parody paul temple perl perl weekly challenge photography podcast politics postscript powers prediction privacy project woolsack pyracantha python quantum rail raku ranting raspberry pi reading reading boardgames social real life restaurant reviews romance rpg a day rpgs ruby rust scala science fiction scythe second world war security shipwreck simutrans smartphone south atlantic war squaddies stationery steampunk stuarts suburbia superheroes suspense television the resistance the weekly challenge thirsty meeples thriller tin soldier torg toys trailers travel type 26 type 31 type 45 vietnam war war wargaming weather wives and sweethearts writing about writing x-wing young adult Special All book reviews, All film reviews
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