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[gleam] complete rectangles
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‎gleam/rectangles/.gitignore

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*.beam
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*.ez
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build
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erl_crash.dump

‎gleam/rectangles/HELP.md

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# Help
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## Running the tests
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To run the tests, run the command `gleam test` from within the exercise directory.
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## Submitting your solution
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You can submit your solution using the `exercism submit src/rectangles.gleam` command.
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This command will upload your solution to the Exercism website and print the solution page's URL.
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It's possible to submit an incomplete solution which allows you to:
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- See how others have completed the exercise
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- Request help from a mentor
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## Need to get help?
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If you'd like help solving the exercise, check the following pages:
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- The [Gleam track's documentation](https://exercism.org/docs/tracks/gleam)
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- The [Gleam track's programming category on the forum](https://forum.exercism.org/c/programming/gleam)
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- [Exercism's programming category on the forum](https://forum.exercism.org/c/programming/5)
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- The [Frequently Asked Questions](https://exercism.org/docs/using/faqs)
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Should those resources not suffice, you could submit your (incomplete) solution to request mentoring.
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To get help if you're having trouble, you can use one of the following resources:
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- [gleam.run](https://gleam.run/documentation/) is the gleam official documentation.
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- [Discord](https://discord.gg/Fm8Pwmy) is the discord channel.
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- [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/rectangles/README.md

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# Rectangles
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Welcome to Rectangles on Exercism's Gleam Track.
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If you need help running the tests or submitting your code, check out `HELP.md`.
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## Instructions
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Count the rectangles in an ASCII diagram like the one below.
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```text
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+--+
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++ |
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+-++--+
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| | |
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+--+--+
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```
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The above diagram contains these 6 rectangles:
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```text
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+-----+
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| |
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+-----+
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```
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```text
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+--+
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| |
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| |
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| |
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+--+
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```
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```text
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+--+
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| |
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+--+
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```
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```text
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+--+
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| |
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+--+
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```
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```text
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+--+
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| |
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+--+
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```
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```text
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++
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++
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```
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You may assume that the input is always a proper rectangle (i.e. the length of every line equals the length of the first line).
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## Source
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### Created by
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- @jiegillet

‎gleam/rectangles/gleam.toml

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name = "rectangles"
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version = "0.1.0"
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[dependencies]
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gleam_bitwise = "~> 1.2"
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gleam_otp = "~> 0.7 or ~> 1.0"
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gleam_stdlib = "~> 0.32 or ~> 1.0"
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simplifile = "~> 1.0"
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gleam_erlang = ">= 0.25.0 and < 1.0.0"
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[dev-dependencies]
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exercism_test_runner = "~> 1.4"

‎gleam/rectangles/manifest.toml

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# This file was generated by Gleam
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# You typically do not need to edit this file
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packages = [
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{ name = "argv", version = "1.0.2", build_tools = ["gleam"], requirements = [], otp_app = "argv", source = "hex", outer_checksum = "BA1FF0929525DEBA1CE67256E5ADF77A7CDDFE729E3E3F57A5BDCAA031DED09D" },
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{ name = "exercism_test_runner", version = "1.8.0", 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 = "B944D89A9D049897DF28C63D595D89CB54D8C407D06EFFCE4CDA8C3EC1C9F51E" },
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{ name = "filepath", version = "1.0.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "filepath", source = "hex", outer_checksum = "EFB6FF65C98B2A16378ABC3EE2B14124168C0CE5201553DE652E2644DCFDB594" },
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{ name = "gap", version = "1.1.3", build_tools = ["gleam"], requirements = ["gleam_community_ansi", "gleam_stdlib"], otp_app = "gap", source = "hex", outer_checksum = "6EF5E3B523FDFBC317E9EA28D5163EE04744A97C007106F90207569789612291" },
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{ name = "glance", version = "1.0.0", build_tools = ["gleam"], requirements = ["gleam_stdlib", "glexer"], otp_app = "glance", source = "hex", outer_checksum = "1510D4A03C28880E62974389E5BF1A5A185036BA07392F1D769620706A9E042F" },
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{ name = "gleam_bitwise", version = "1.3.1", build_tools = ["gleam"], requirements = [], otp_app = "gleam_bitwise", source = "hex", outer_checksum = "B36E1D3188D7F594C7FD4F43D0D2CE17561DE896202017548578B16FE1FE9EFC" },
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{ name = "gleam_community_ansi", version = "1.4.1", build_tools = ["gleam"], requirements = ["gleam_community_colour", "gleam_stdlib"], otp_app = "gleam_community_ansi", source = "hex", outer_checksum = "4CD513FC62523053E62ED7BAC2F36136EC17D6A8942728250A9A00A15E340E4B" },
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{ name = "gleam_community_colour", version = "1.4.0", build_tools = ["gleam"], requirements = ["gleam_json", "gleam_stdlib"], otp_app = "gleam_community_colour", source = "hex", outer_checksum = "795964217EBEDB3DA656F5EB8F67D7AD22872EB95182042D3E7AFEF32D3FD2FE" },
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{ name = "gleam_erlang", version = "0.27.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleam_erlang", source = "hex", outer_checksum = "DE468F676D71B313C6C8C5334425CFCF827837333F8AB47B64D8A6D7AA40185D" },
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{ name = "gleam_json", version = "1.0.1", build_tools = ["gleam"], requirements = ["gleam_stdlib", "thoas"], otp_app = "gleam_json", source = "hex", outer_checksum = "9063D14D25406326C0255BDA0021541E797D8A7A12573D849462CAFED459F6EB" },
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{ name = "gleam_otp", version = "0.12.1", build_tools = ["gleam"], requirements = ["gleam_erlang", "gleam_stdlib"], otp_app = "gleam_otp", source = "hex", outer_checksum = "BFACC1513410DF5A1617169A9CD7EA334973AC71D860A17574BA7B2EADD89A6F" },
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{ name = "gleam_stdlib", version = "0.40.0", build_tools = ["gleam"], requirements = [], otp_app = "gleam_stdlib", source = "hex", outer_checksum = "86606B75A600BBD05E539EB59FABC6E307EEEA7B1E5865AFB6D980A93BCB2181" },
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{ name = "glexer", version = "1.0.1", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "glexer", source = "hex", outer_checksum = "BD477AD657C2B637FEF75F2405FAEFFA533F277A74EF1A5E17B55B1178C228FB" },
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{ name = "simplifile", version = "1.7.0", build_tools = ["gleam"], requirements = ["filepath", "gleam_stdlib"], otp_app = "simplifile", source = "hex", outer_checksum = "1D5DFA3A2F9319EC85825F6ED88B8E449F381B0D55A62F5E61424E748E7DDEB0" },
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{ name = "thoas", version = "1.2.1", build_tools = ["rebar3"], requirements = [], otp_app = "thoas", source = "hex", outer_checksum = "E38697EDFFD6E91BD12CEA41B155115282630075C2A727E7A6B2947F5408B86A" },
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]
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[requirements]
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exercism_test_runner = { version = "~> 1.4" }
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gleam_bitwise = { version = "~> 1.2" }
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gleam_erlang = { version = ">= 0.25.0 and < 1.0.0" }
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gleam_otp = { version = "~> 0.7 or ~> 1.0" }
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gleam_stdlib = { version = "~> 0.32 or ~> 1.0" }
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simplifile = { version = "~> 1.0" }

‎gleam/rectangles/src/rectangles.gleam

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import gleam/bool
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import gleam/int
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import gleam/list
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import gleam/string
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type Point {
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Point(char: String, x: Int, y: Int)
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}
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pub fn rectangles(input: String) -> Int {
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let points =
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input
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|> string.split("\n")
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|> list.index_map(fn(line, y) {
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line
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|> string.to_graphemes
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|> list.index_map(fn(char, x) { Point(char, x, y) })
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})
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|> list.flatten
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points
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|> list.filter(fn(p) { p.char == "+" })
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|> list.combinations(4)
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|> list.map(list.sort(_, fn(a, b) { int.compare(a.x, b.x) }))
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|> list.filter(fn(vertices) {
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let assert [tl, bl, tr, br] = vertices
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use <- bool.guard(
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tl.y != tr.y || tr.x != br.x || br.y != bl.y || bl.x != tl.x,
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False,
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)
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let horizontal =
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list.filter(points, fn(p) {
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{ p.y == tl.y || p.y == bl.y } && tl.x < p.x && p.x < tr.x
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})
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let vertical =
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list.filter(points, fn(p) {
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{ p.x == tl.x || p.x == tr.x } && tl.y < p.y && p.y < bl.y
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})
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list.all(horizontal, fn(p) { p.char == "-" || p.char == "+" })
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&& list.all(vertical, fn(p) { p.char == "|" || p.char == "+" })
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})
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|> list.length
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}

‎gleam/rectangles/test/rectangles_test.gleam

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import exercism/should
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import exercism/test_runner
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import rectangles
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pub fn main() {
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test_runner.main()
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}
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pub fn no_rows_test() {
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rectangles.rectangles("")
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|> should.equal(0)
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}
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pub fn no_columns_test() {
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rectangles.rectangles(
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"
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",
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)
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|> should.equal(0)
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}
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pub fn no_rectangles_test() {
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rectangles.rectangles(" ")
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|> should.equal(0)
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}
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pub fn one_rectangle_test() {
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rectangles.rectangles(
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"
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+-+
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| |
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+-+
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",
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)
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|> should.equal(1)
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}
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pub fn two_rectangles_without_shared_parts_test() {
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rectangles.rectangles(
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"
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+-+
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| |
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+-+-+
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| |
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+-+
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",
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)
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|> should.equal(2)
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}
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pub fn five_rectangles_with_shared_parts_test() {
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rectangles.rectangles(
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"
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+-+
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| |
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+-+-+
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| | |
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+-+-+
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",
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)
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|> should.equal(5)
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}
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pub fn rectangle_of_height_1_is_counted_test() {
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rectangles.rectangles(
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"
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+--+
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+--+
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",
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)
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|> should.equal(1)
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}
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pub fn rectangle_of_width_1_is_counted_test() {
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rectangles.rectangles(
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"
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++
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||
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++
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",
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)
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|> should.equal(1)
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}
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pub fn one_by_one_square_is_counted_test() {
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rectangles.rectangles(
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"
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++
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++
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",
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)
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|> should.equal(1)
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}
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pub fn only_complete_rectangles_are_counted_test() {
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rectangles.rectangles(
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"
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+-+
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|
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+-+-+
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| | -
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+-+-+
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",
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)
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|> should.equal(1)
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}
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pub fn rectangles_can_be_of_different_sizes_test() {
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rectangles.rectangles(
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"
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+------+----+
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| | |
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+---+--+ |
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| | |
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+---+-------+
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",
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)
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|> should.equal(3)
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}
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pub fn corner_is_required_for_a_rectangle_to_be_complete_test() {
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rectangles.rectangles(
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"
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+------+----+
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| | |
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+------+ |
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| | |
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+---+-------+
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",
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)
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|> should.equal(2)
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}
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pub fn large_input_with_many_rectangles_test() {
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rectangles.rectangles(
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"
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+---+--+----+
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| +--+----+
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+---+--+ |
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| +--+----+
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+---+--+--+-+
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+---+--+--+-+
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+------+ | |
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+-+
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",
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)
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|> should.equal(60)
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}
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pub fn rectangles_must_have_four_sides_test() {
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rectangles.rectangles(
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"
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+-+ +-+
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| | | |
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+-+-+-+
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| |
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+-+-+-+
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| | | |
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+-+ +-+
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",
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)
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|> should.equal(5)
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}

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