leap

rust/leap/.exercism/config.json

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+{
+  "authors": [
+    "EduardoBautista"
+  ],
+  "contributors": [
+    "andrewclarkson",
+    "andy5995",
+    "ashleygwilliams",
+    "ClashTheBunny",
+    "coriolinus",
+    "cwhakes",
+    "darnuria",
+    "EduardoBautista",
+    "efx",
+    "Emerentius",
+    "ErikSchierboom",
+    "hunger",
+    "IanWhitney",
+    "JIghtuse",
+    "jonasbn",
+    "kytrinyx",
+    "leoyvens",
+    "lutostag",
+    "mkantor",
+    "navossoc",
+    "nfiles",
+    "petertseng",
+    "pminten",
+    "rofrol",
+    "sshine",
+    "stringparser",
+    "xakon",
+    "ZapAnton"
+  ],
+  "files": {
+    "solution": [
+      "src/lib.rs",
+      "Cargo.toml"
+    ],
+    "test": [
+      "tests/leap.rs"
+    ],
+    "example": [
+      ".meta/example.rs"
+    ]
+  },
+  "blurb": "Determine whether a given year is a leap year.",
+  "source": "CodeRanch Cattle Drive, Assignment 3",
+  "source_url": "https://web.archive.org/web/20240907033714/https://coderanch.com/t/718816/Leap"
+}

rust/leap/.gitignore

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+/target
+Cargo.lock

rust/leap/Cargo.toml

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+[package]
+name = "leap"
+version = "0.1.0"
+edition = "2024"
+
+# Not all libraries from crates.io are available in Exercism's test runner.
+# The full list of available libraries is here:
+# https://github.com/exercism/rust-test-runner/blob/main/local-registry/Cargo.toml
+[dependencies]

rust/leap/HELP.md

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+# Help
+
+## Running the tests
+
+Execute the tests with:
+
+```bash
+$ cargo test
+```
+
+All but the first test have been ignored. After you get the first test to
+pass, open the tests source file which is located in the `tests` directory
+and remove the `#[ignore]` flag from the next test and get the tests to pass
+again. Each separate test is a function with `#[test]` flag above it.
+Continue, until you pass every test.
+
+If you wish to run _only ignored_ tests without editing the tests source file, use:
+
+```bash
+$ cargo test -- --ignored
+```
+
+If you are using Rust 1.51 or later, you can run _all_ tests with
+
+```bash
+$ cargo test -- --include-ignored
+```
+
+To run a specific test, for example `some_test`, you can use:
+
+```bash
+$ cargo test some_test
+```
+
+If the specific test is ignored, use:
+
+```bash
+$ cargo test some_test -- --ignored
+```
+
+To learn more about Rust tests refer to the online [test documentation][rust-tests].
+
+[rust-tests]: https://doc.rust-lang.org/book/ch11-02-running-tests.html
+
+## Submitting your solution
+
+You can submit your solution using the `exercism submit src/lib.rs Cargo.toml` 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 [Rust track's documentation](https://exercism.org/docs/tracks/rust)
+- The [Rust track's programming category on the forum](https://forum.exercism.org/c/programming/rust)
+- [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.
+
+## Rust Installation
+
+Refer to the [exercism help page][help-page] for Rust installation and learning
+resources.
+
+## Submitting the solution
+
+Generally you should submit all files in which you implemented your solution (`src/lib.rs` in most cases). If you are using any external crates, please consider submitting the `Cargo.toml` file. This will make the review process faster and clearer.
+
+## Feedback, Issues, Pull Requests
+
+Head to [the forum](https://forum.exercism.org/c/programming/rust/) and create a post to provide feedback about an exercise or if you want to help implement new exercises.
+Members of the rust track team are happy to help!
+
+The GitHub [track repository][github] is the home for all of the Rust exercises.
+
+If you want to know more about Exercism, take a look at the [contribution guide].
+
+## Submitting Incomplete Solutions
+It's possible to submit an incomplete solution so you can see how others have completed the exercise.
+
+[help-page]: https://exercism.org/tracks/rust/learning
+[github]: https://github.com/exercism/rust
+[contribution guide]: https://exercism.org/docs/community/contributors

rust/leap/README.md

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+# Leap
+
+Welcome to Leap on Exercism's Rust Track.
+If you need help running the tests or submitting your code, check out `HELP.md`.
+
+## Introduction
+
+A leap year (in the Gregorian calendar) occurs:
+
+- In every year that is evenly divisible by 4.
+- Unless the year is evenly divisible by 100, in which case it's only a leap year if the year is also evenly divisible by 400.
+
+Some examples:
+
+- 1997 was not a leap year as it's not divisible by 4.
+- 1900 was not a leap year as it's not divisible by 400.
+- 2000 was a leap year!
+
+~~~~exercism/note
+For a delightful, four-minute explanation of the whole phenomenon of leap years, check out [this YouTube video](https://www.youtube.com/watch?v=xX96xng7sAE).
+~~~~
+
+## Instructions
+
+Your task is to determine whether a given year is a leap year.
+
+You may use the [`arithmetic remainder` operator](https://doc.rust-lang.org/book/appendix-02-operators.html) to test for divisibility.
+
+## Source
+
+### Created by
+
+- @EduardoBautista
+
+### Contributed to by
+
+- @andrewclarkson
+- @andy5995
+- @ashleygwilliams
+- @ClashTheBunny
+- @coriolinus
+- @cwhakes
+- @darnuria
+- @EduardoBautista
+- @efx
+- @Emerentius
+- @ErikSchierboom
+- @hunger
+- @IanWhitney
+- @JIghtuse
+- @jonasbn
+- @kytrinyx
+- @leoyvens
+- @lutostag
+- @mkantor
+- @navossoc
+- @nfiles
+- @petertseng
+- @pminten
+- @rofrol
+- @sshine
+- @stringparser
+- @xakon
+- @ZapAnton
+
+### Based on
+
+CodeRanch Cattle Drive, Assignment 3 - https://web.archive.org/web/20240907033714/https://coderanch.com/t/718816/Leap

rust/leap/src/lib.rs

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+pub fn is_leap_year(year: u64) -> bool {
+    (0 == year % 4) && (0 != year % 100 || 0 == year % 400)
+}

rust/leap/tests/leap.rs

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+use leap::*;
+
+#[test]
+fn year_not_divisible_by_4_in_common_year() {
+    assert!(!is_leap_year(2015));
+}
+
+#[test]
+fn year_divisible_by_2_not_divisible_by_4_in_common_year() {
+    assert!(!is_leap_year(1970));
+}
+
+#[test]
+fn year_divisible_by_4_not_divisible_by_100_in_leap_year() {
+    assert!(is_leap_year(1996));
+}
+
+#[test]
+fn year_divisible_by_4_and_5_is_still_a_leap_year() {
+    assert!(is_leap_year(1960));
+}
+
+#[test]
+fn year_divisible_by_100_not_divisible_by_400_in_common_year() {
+    assert!(!is_leap_year(2100));
+}
+
+#[test]
+fn year_divisible_by_100_but_not_by_3_is_still_not_a_leap_year() {
+    assert!(!is_leap_year(1900));
+}
+
+#[test]
+fn year_divisible_by_400_is_leap_year() {
+    assert!(is_leap_year(2000));
+}
+
+#[test]
+fn year_divisible_by_400_but_not_by_125_is_still_a_leap_year() {
+    assert!(is_leap_year(2400));
+}
+
+#[test]
+fn year_divisible_by_200_not_divisible_by_400_in_common_year() {
+    assert!(!is_leap_year(1800));
+}