[gleam] complete anagram

gleam/anagram/.gitignore

@@ -0,0 +1,4 @@
+*.beam
+*.ez
+build
+erl_crash.dump

gleam/anagram/HELP.md

@@ -0,0 +1,32 @@
+# Help
+
+## Running the tests
+
+To run the tests, run the command `gleam test` from within the exercise directory.
+
+## Submitting your solution
+
+You can submit your solution using the `exercism submit src/anagram.gleam` command.
+This command will upload your solution to the Exercism website and print the solution page's URL.
+
+It's possible to submit an incomplete solution which allows you to:
+
+- See how others have completed the exercise
+- Request help from a mentor
+
+## Need to get help?
+
+If you'd like help solving the exercise, check the following pages:
+
+- The [Gleam track's documentation](https://exercism.org/docs/tracks/gleam)
+- The [Gleam track's programming category on the forum](https://forum.exercism.org/c/programming/gleam)
+- [Exercism's programming category on the forum](https://forum.exercism.org/c/programming/5)
+- The [Frequently Asked Questions](https://exercism.org/docs/using/faqs)
+
+Should those resources not suffice, you could submit your (incomplete) solution to request mentoring.
+
+To get help if you're having trouble, you can use one of the following resources:
+
+- [gleam.run](https://gleam.run/documentation/) is the gleam official documentation.
+- [Discord](https://discord.gg/Fm8Pwmy) is the discord channel.
+- [StackOverflow](https://stackoverflow.com/questions/tagged/gleam) can be used to search for your problem and see if it has been answered already. You can also ask and answer questions.

gleam/anagram/README.md

@@ -0,0 +1,33 @@
+# Anagram
+
+Welcome to Anagram on Exercism's Gleam Track.
+If you need help running the tests or submitting your code, check out `HELP.md`.
+
+## Instructions
+
+An anagram is a rearrangement of letters to form a new word: for example `"owns"` is an anagram of `"snow"`.
+A word is not its own anagram: for example, `"stop"` is not an anagram of `"stop"`.
+
+Given a target word and a set of candidate words, this exercise requests the anagram set: the subset of the candidates that are anagrams of the target.
+
+The target and candidates are words of one or more ASCII alphabetic characters (`A`-`Z` and `a`-`z`).
+Lowercase and uppercase characters are equivalent: for example, `"PoTS"` is an anagram of `"sTOp"`, but `StoP` is not an anagram of `sTOp`.
+The anagram set is the subset of the candidate set that are anagrams of the target (in any order).
+Words in the anagram set should have the same letter case as in the candidate set.
+
+Given the target `"stone"` and candidates `"stone"`, `"tones"`, `"banana"`, `"tons"`, `"notes"`, `"Seton"`, the anagram set is `"tones"`, `"notes"`, `"Seton"`.
+
+## Source
+
+### Created by
+
+- @massivefermion
+
+### Contributed to by
+
+- @lpil
+- @kytrinyx
+
+### Based on
+
+Inspired by the Extreme Startup game - https://github.com/rchatley/extreme_startup

gleam/anagram/gleam.toml

@@ -0,0 +1,12 @@
+name = "anagram"
+version = "0.1.0"
+
+[dependencies]
+gleam_bitwise = "~> 1.2"
+gleam_otp = "~> 0.7 or ~> 1.0"
+gleam_stdlib = "~> 0.32 or ~> 1.0"
+simplifile = "~> 1.0"
+gleam_erlang = ">= 0.25.0 and < 1.0.0"
+
+[dev-dependencies]
+exercism_test_runner = "~> 1.4"

gleam/anagram/manifest.toml

@@ -0,0 +1,27 @@
+# This file was generated by Gleam
+# You typically do not need to edit this file
+
+packages = [
+  { name = "argv", version = "1.0.1", build_tools = ["gleam"], requirements = [], otp_app = "argv", source = "hex", outer_checksum = "A6E9009E50BBE863EB37D963E4315398D41A3D87D0075480FC244125808F964A" },
+  { name = "exercism_test_runner", version = "1.7.0", build_tools = ["gleam"], requirements = ["argv", "gap", "glance", "gleam_community_ansi", "gleam_erlang", "gleam_json", "gleam_stdlib", "simplifile"], otp_app = "exercism_test_runner", source = "hex", outer_checksum = "2FC1BADB19BEC2AE77BFD2D3A606A014C85412A7B874CAFC4BA8CF04B0B257CD" },
+  { name = "gap", version = "1.1.0", build_tools = ["gleam"], requirements = ["gleam_community_ansi", "gleam_stdlib"], otp_app = "gap", source = "hex", outer_checksum = "2EE1B0A17E85CF73A0C1D29DA315A2699117A8F549C8E8D89FA8261BE41EDEB1" },
+  { name = "glance", version = "0.8.2", build_tools = ["gleam"], requirements = ["gleam_stdlib", "glexer"], otp_app = "glance", source = "hex", outer_checksum = "ACF09457E8B564AD7A0D823DAFDD326F58263C01ACB0D432A9BEFDEDD1DA8E73" },
+  { name = "gleam_bitwise", version = "1.3.1", build_tools = ["gleam"], requirements = [], otp_app = "gleam_bitwise", source = "hex", outer_checksum = "B36E1D3188D7F594C7FD4F43D0D2CE17561DE896202017548578B16FE1FE9EFC" },
+  { name = "gleam_community_ansi", version = "1.4.0", build_tools = ["gleam"], requirements = ["gleam_community_colour", "gleam_stdlib"], otp_app = "gleam_community_ansi", source = "hex", outer_checksum = "FE79E08BF97009729259B6357EC058315B6FBB916FAD1C2FF9355115FEB0D3A4" },
+  { name = "gleam_community_colour", version = "1.3.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleam_community_colour", source = "hex", outer_checksum = "A49A5E3AE8B637A5ACBA80ECB9B1AFE89FD3D5351FF6410A42B84F666D40D7D5" },
+  { name = "gleam_erlang", version = "0.25.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleam_erlang", source = "hex", outer_checksum = "054D571A7092D2A9727B3E5D183B7507DAB0DA41556EC9133606F09C15497373" },
+  { name = "gleam_json", version = "1.0.0", build_tools = ["gleam"], requirements = ["gleam_stdlib", "thoas"], otp_app = "gleam_json", source = "hex", outer_checksum = "8B197DD5D578EA6AC2C0D4BDC634C71A5BCA8E7DB5F47091C263ECB411A60DF3" },
+  { name = "gleam_otp", version = "0.10.0", build_tools = ["gleam"], requirements = ["gleam_erlang", "gleam_stdlib"], otp_app = "gleam_otp", source = "hex", outer_checksum = "0B04FE915ACECE539B317F9652CAADBBC0F000184D586AAAF2D94C100945D72B" },
+  { name = "gleam_stdlib", version = "0.36.0", build_tools = ["gleam"], requirements = [], otp_app = "gleam_stdlib", source = "hex", outer_checksum = "C0D14D807FEC6F8A08A7C9EF8DFDE6AE5C10E40E21325B2B29365965D82EB3D4" },
+  { name = "glexer", version = "0.7.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "glexer", source = "hex", outer_checksum = "4484942A465482A0A100936E1E5F12314DB4B5AC0D87575A7B9E9062090B96BE" },
+  { name = "simplifile", version = "1.5.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "simplifile", source = "hex", outer_checksum = "EB9AA8E65E5C1E3E0FDCFC81BC363FD433CB122D7D062750FFDF24DE4AC40116" },
+  { name = "thoas", version = "0.4.1", build_tools = ["rebar3"], requirements = [], otp_app = "thoas", source = "hex", outer_checksum = "4918D50026C073C4AB1388437132C77A6F6F7C8AC43C60C13758CC0ADCE2134E" },
+]
+
+[requirements]
+exercism_test_runner = { version = "~> 1.4" }
+gleam_bitwise = { version = "~> 1.2" }
+gleam_erlang = { version = ">= 0.25.0 and < 1.0.0"}
+gleam_otp = { version = "~> 0.7 or ~> 1.0" }
+gleam_stdlib = { version = "~> 0.32 or ~> 1.0" }
+simplifile = { version = "~> 1.0" }

gleam/anagram/src/anagram.gleam

@@ -0,0 +1,18 @@
+import gleam/string
+import gleam/list
+
+pub fn find_anagrams(word: String, candidates: List(String)) -> List(String) {
+  list.filter(candidates, is_anagram(word, _))
+}
+
+fn is_anagram(a: String, b: String) -> Bool {
+  let a = string.lowercase(a)
+  let b = string.lowercase(b)
+  a != b && sorted_graphemes(a) == sorted_graphemes(b)
+}
+
+fn sorted_graphemes(str: String) {
+  str
+  |> string.to_graphemes
+  |> list.sort(string.compare)
+}

gleam/anagram/test/anagram_test.gleam

@@ -0,0 +1,89 @@
+import anagram.{find_anagrams}
+import exercism/should
+import exercism/test_runner
+
+pub fn main() {
+  test_runner.main()
+}
+
+pub fn no_matches_test() {
+  find_anagrams("diaper", ["hello", "world", "zombies", "pants"])
+  |> should.equal([])
+}
+
+pub fn detects_two_anagrams_test() {
+  find_anagrams("solemn", ["lemons", "cherry", "melons"])
+  |> should.equal(["lemons", "melons"])
+}
+
+pub fn does_not_detect_anagram_subsets_test() {
+  find_anagrams("good", ["dog", "goody"])
+  |> should.equal([])
+}
+
+pub fn detects_anagram_test() {
+  find_anagrams("listen", ["enlists", "google", "inlets", "banana"])
+  |> should.equal(["inlets"])
+}
+
+pub fn detects_three_anagrams_test() {
+  find_anagrams("allergy", [
+    "gallery", "ballerina", "regally", "clergy", "largely", "leading",
+  ])
+  |> should.equal(["gallery", "regally", "largely"])
+}
+
+pub fn detects_multiple_anagrams_with_different_case_test() {
+  find_anagrams("nose", ["Eons", "ONES"])
+  |> should.equal(["Eons", "ONES"])
+}
+
+pub fn does_not_detect_non_anagrams_with_identical_checksum_test() {
+  find_anagrams("mass", ["last"])
+  |> should.equal([])
+}
+
+pub fn detects_anagrams_case_insensitively_test() {
+  find_anagrams("Orchestra", ["cashregister", "Carthorse", "radishes"])
+  |> should.equal(["Carthorse"])
+}
+
+pub fn detects_anagrams_using_case_insensitive_subject_test() {
+  find_anagrams("Orchestra", ["cashregister", "carthorse", "radishes"])
+  |> should.equal(["carthorse"])
+}
+
+pub fn detects_anagrams_using_case_insensitive_possible_matches_test() {
+  find_anagrams("orchestra", ["cashregister", "Carthorse", "radishes"])
+  |> should.equal(["Carthorse"])
+}
+
+pub fn does_not_detect_an_anagram_if_the_original_word_is_repeated_test() {
+  find_anagrams("go", ["go Go GO"])
+  |> should.equal([])
+}
+
+pub fn anagrams_must_use_all_letters_exactly_once_test() {
+  find_anagrams("tapper", ["patter"])
+  |> should.equal([])
+}
+
+pub fn words_are_not_anagrams_of_themselves_test() {
+  find_anagrams("BANANA", ["BANANA"])
+  |> should.equal([])
+}
+
+pub fn words_are_not_anagrams_of_themselves_even_if_letter_case_is_partially_different_test() {
+  find_anagrams("BANANA", ["Banana"])
+  |> should.equal([])
+}
+
+pub fn words_are_not_anagrams_of_themselves_even_if_letter_case_is_completely_different_test() {
+  find_anagrams("BANANA", ["banana"])
+  |> should.equal([])
+}
+
+pub fn words_other_than_themselves_can_be_anagrams_test() {
+  find_anagrams("LISTEN", ["LISTEN", "Silent"])
+  |> should.equal(["Silent"])
+}