From 3547087c1d65414c784adb050b5d00093d6bb780 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Jo=C3=A3o=20Fernandes?= Date: Wed, 20 Mar 2024 21:13:12 -0300 Subject: [PATCH] [gleam] complete difference-of-squares --- gleam/difference-of-squares/.gitignore | 4 ++ gleam/difference-of-squares/HELP.md | 32 ++++++++++++ gleam/difference-of-squares/README.md | 33 ++++++++++++ gleam/difference-of-squares/gleam.toml | 11 ++++ gleam/difference-of-squares/manifest.toml | 26 ++++++++++ .../src/difference_of_squares.gleam | 17 ++++++ .../test/difference_of_squares_test.gleam | 52 +++++++++++++++++++ 7 files changed, 175 insertions(+) create mode 100644 gleam/difference-of-squares/.gitignore create mode 100644 gleam/difference-of-squares/HELP.md create mode 100644 gleam/difference-of-squares/README.md create mode 100644 gleam/difference-of-squares/gleam.toml create mode 100644 gleam/difference-of-squares/manifest.toml create mode 100644 gleam/difference-of-squares/src/difference_of_squares.gleam create mode 100644 gleam/difference-of-squares/test/difference_of_squares_test.gleam diff --git a/gleam/difference-of-squares/.gitignore b/gleam/difference-of-squares/.gitignore new file mode 100644 index 0000000..170cca9 --- /dev/null +++ b/gleam/difference-of-squares/.gitignore @@ -0,0 +1,4 @@ +*.beam +*.ez +build +erl_crash.dump diff --git a/gleam/difference-of-squares/HELP.md b/gleam/difference-of-squares/HELP.md new file mode 100644 index 0000000..cb4f798 --- /dev/null +++ b/gleam/difference-of-squares/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/difference_of_squares.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. \ No newline at end of file diff --git a/gleam/difference-of-squares/README.md b/gleam/difference-of-squares/README.md new file mode 100644 index 0000000..5ed8349 --- /dev/null +++ b/gleam/difference-of-squares/README.md @@ -0,0 +1,33 @@ +# Difference Of Squares + +Welcome to Difference Of Squares on Exercism's Gleam Track. +If you need help running the tests or submitting your code, check out `HELP.md`. + +## Instructions + +Find the difference between the square of the sum and the sum of the squares of the first N natural numbers. + +The square of the sum of the first ten natural numbers is +(1 + 2 + ... + 10)² = 55² = 3025. + +The sum of the squares of the first ten natural numbers is +1² + 2² + ... + 10² = 385. + +Hence the difference between the square of the sum of the first ten natural numbers and the sum of the squares of the first ten natural numbers is 3025 - 385 = 2640. + +You are not expected to discover an efficient solution to this yourself from first principles; research is allowed, indeed, encouraged. +Finding the best algorithm for the problem is a key skill in software engineering. + +## Source + +### Created by + +- @nono + +### Contributed to by + +- @lpil + +### Based on + +Problem 6 at Project Euler - https://projecteuler.net/problem=6 \ No newline at end of file diff --git a/gleam/difference-of-squares/gleam.toml b/gleam/difference-of-squares/gleam.toml new file mode 100644 index 0000000..08efbdf --- /dev/null +++ b/gleam/difference-of-squares/gleam.toml @@ -0,0 +1,11 @@ +name = "difference_of_squares" +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" + +[dev-dependencies] +exercism_test_runner = "~> 1.4" diff --git a/gleam/difference-of-squares/manifest.toml b/gleam/difference-of-squares/manifest.toml new file mode 100644 index 0000000..002fb9f --- /dev/null +++ b/gleam/difference-of-squares/manifest.toml @@ -0,0 +1,26 @@ +# 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 = "0.24.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleam_erlang", source = "hex", outer_checksum = "26BDB52E61889F56A291CB34167315780EE4AA20961917314446542C90D1C1A0" }, + { 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_otp = { version = "~> 0.7 or ~> 1.0" } +gleam_stdlib = { version = "~> 0.32 or ~> 1.0" } +simplifile = { version = "~> 1.0" } diff --git a/gleam/difference-of-squares/src/difference_of_squares.gleam b/gleam/difference-of-squares/src/difference_of_squares.gleam new file mode 100644 index 0000000..f46bcf8 --- /dev/null +++ b/gleam/difference-of-squares/src/difference_of_squares.gleam @@ -0,0 +1,17 @@ +import gleam/list +import gleam/int + +pub fn square_of_sum(n: Int) -> Int { + list.range(1, n) + |> int.sum + |> fn(x) { x * x } +} + +pub fn sum_of_squares(n: Int) -> Int { + list.range(1, n) + |> list.fold(0, fn(x, y) { x + y * y }) +} + +pub fn difference(n: Int) -> Int { + square_of_sum(n) - sum_of_squares(n) +} diff --git a/gleam/difference-of-squares/test/difference_of_squares_test.gleam b/gleam/difference-of-squares/test/difference_of_squares_test.gleam new file mode 100644 index 0000000..1476518 --- /dev/null +++ b/gleam/difference-of-squares/test/difference_of_squares_test.gleam @@ -0,0 +1,52 @@ +import difference_of_squares +import exercism/should +import exercism/test_runner + +pub fn main() { + test_runner.main() +} + +pub fn square_of_sum_1_test() { + difference_of_squares.square_of_sum(1) + |> should.equal(1) +} + +pub fn square_of_sum_5_test() { + difference_of_squares.square_of_sum(5) + |> should.equal(225) +} + +pub fn square_of_sum_100_test() { + difference_of_squares.square_of_sum(100) + |> should.equal(25_502_500) +} + +pub fn sum_of_squares_1_test() { + difference_of_squares.sum_of_squares(1) + |> should.equal(1) +} + +pub fn sum_of_squares_5_test() { + difference_of_squares.sum_of_squares(5) + |> should.equal(55) +} + +pub fn sum_of_squares_100_test() { + difference_of_squares.sum_of_squares(100) + |> should.equal(338_350) +} + +pub fn difference_of_squares_1_test() { + difference_of_squares.difference(1) + |> should.equal(0) +} + +pub fn difference_of_squares_5_test() { + difference_of_squares.difference(5) + |> should.equal(170) +} + +pub fn difference_of_squares_100_test() { + difference_of_squares.difference(100) + |> should.equal(25_164_150) +}