Zig: completed Eliud's Eggs

zig/eliuds-eggs/.exercism/config.json

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+{
+  "authors": [
+    "keiravillekode"
+  ],
+  "files": {
+    "solution": [
+      "eliuds_eggs.zig"
+    ],
+    "test": [
+      "test_eliuds_eggs.zig"
+    ],
+    "example": [
+      ".meta/example.zig"
+    ]
+  },
+  "blurb": "Help Eliud count the number of eggs in her chicken coop by counting the number of 1 bits in a binary representation.",
+  "source": "Christian Willner, Eric Willigers",
+  "source_url": "https://forum.exercism.org/t/new-exercise-suggestion-pop-count/7632/5"
+}

zig/eliuds-eggs/.exercism/metadata.json

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+{"track":"zig","exercise":"eliuds-eggs","id":"d4996cf553124d6a820a484392d74691","url":"https://exercism.org/tracks/zig/exercises/eliuds-eggs","handle":"Chomp1295","is_requester":true,"auto_approve":false}

zig/eliuds-eggs/HELP.md

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+# Help
+
+## Running the tests
+
+Write your code in `<exercise_name>.zig`.
+
+To run the tests for an exercise, run:
+
+```bash
+zig test test_exercise_name.zig
+```
+
+in the exercise's root directory (replacing `exercise_name` with the name of the exercise).
+
+## Submitting your solution
+
+You can submit your solution using the `exercism submit eliuds_eggs.zig` 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 [Zig track's documentation](https://exercism.org/docs/tracks/zig)
+- The [Zig track's programming category on the forum](https://forum.exercism.org/c/programming/zig)
+- [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.
+
+- [The Zig Programming Language Documentation][documentation] is a great overview of all of the language features that Zig provides to those who use it.
+- [Zig Guide][zig-guide] is an excellent primer that explains the language features that Zig has to offer.
+- [Ziglings][ziglings] is highly recommended.
+  Learn Zig by fixing tiny broken programs.
+- [The Zig Programming Language Discord][discord-zig] is the main [Discord][discord].
+  It provides a great way to get in touch with the Zig community at large, and get some quick, direct help for any Zig related problem.
+- [#zig][irc] on irc.freenode.net is the main Zig IRC channel.
+- [/r/Zig][reddit] is the main Zig subreddit.
+- [Stack Overflow][stack-overflow] can be used to discover code snippets and solutions to problems that may have already asked and maybe solved by others.
+
+[discord]: https://discordapp.com
+[discord-zig]: https://discord.com/invite/gxsFFjE
+[documentation]: https://ziglang.org/documentation/master
+[irc]: https://webchat.freenode.net/?channels=%23zig
+[reddit]: https://www.reddit.com/r/Zig
+[stack-overflow]: https://stackoverflow.com/questions/tagged/zig
+[zig-guide]: https://zig.guide/
+[ziglings]: https://codeberg.org/ziglings/exercises

zig/eliuds-eggs/README.md

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+# Eliuds Eggs
+
+Welcome to Eliuds Eggs on Exercism's Zig Track.
+If you need help running the tests or submitting your code, check out `HELP.md`.
+
+## Introduction
+
+Your friend Eliud inherited a farm from her grandma Tigist.
+Her granny was an inventor and had a tendency to build things in an overly complicated manner.
+The chicken coop has a digital display showing an encoded number representing the positions of all eggs that could be picked up.
+
+Eliud is asking you to write a program that shows the actual number of eggs in the coop.
+
+The position information encoding is calculated as follows:
+
+1. Scan the potential egg-laying spots and mark down a `1` for an existing egg or a `0` for an empty spot.
+2. Convert the number from binary to decimal.
+3. Show the result on the display.
+
+Example 1:
+
+```text
+Chicken Coop:
+ _ _ _ _ _ _ _
+|E| |E|E| | |E|
+
+Resulting Binary:
+ 1 0 1 1 0 0 1
+
+Decimal number on the display:
+89
+
+Actual eggs in the coop:
+4
+```
+
+Example 2:
+
+```text
+Chicken Coop:
+ _ _ _ _ _ _ _ _
+| | | |E| | | | |
+
+Resulting Binary:
+ 0 0 0 1 0 0 0 0
+
+Decimal number on the display:
+16
+
+Actual eggs in the coop:
+1
+```
+
+## Instructions
+
+Your task is to count the number of 1 bits in the binary representation of a number.
+
+## Restrictions
+
+Keep your hands off that bit-count functionality provided by your standard library!
+Solve this one yourself using other basic tools instead.
+
+## Source
+
+### Created by
+
+- @keiravillekode
+
+### Based on
+
+Christian Willner, Eric Willigers - https://forum.exercism.org/t/new-exercise-suggestion-pop-count/7632/5

zig/eliuds-eggs/eliuds_eggs.zig

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+const std = @import("std");
+
+pub fn eggCount(number: usize) usize {
+    var count: usize = 0;
+    var temp: usize = number;
+
+    while (temp > 0) : (temp /= 2) {
+        if (temp % 2 != 0) count += 1;
+    }
+
+    return count;
+}

zig/eliuds-eggs/test_eliuds_eggs.zig

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+const std = @import("std");
+const testing = std.testing;
+
+const eliuds_eggs = @import("eliuds_eggs.zig");
+
+test "0 eggs" {
+    const expected: usize = 0;
+    const actual = eliuds_eggs.eggCount(0);
+    try testing.expectEqual(expected, actual);
+}
+
+test "1 egg" {
+    const expected: usize = 1;
+    const actual = eliuds_eggs.eggCount(16);
+    try testing.expectEqual(expected, actual);
+}
+
+test "4 eggs" {
+    const expected: usize = 4;
+    const actual = eliuds_eggs.eggCount(89);
+    try testing.expectEqual(expected, actual);
+}
+
+test "13 eggs" {
+    const expected: usize = 13;
+    const actual = eliuds_eggs.eggCount(2000000000);
+    try testing.expectEqual(expected, actual);
+}