[2024] Added Day 08: Resonant Collinearity

2024/08/resonant_collinearity/benchmarks/puzzle_benchmarks.zig

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+const std = @import("std");
+const zbench = @import("zbench");
+const resonant_collinearity = @import("resonant_collinearity");
+
+const puzzle_input = @embedFile("puzzle_input");
+
+// Benchmark of part 1
+fn task_1(allocator: std.mem.Allocator) void {
+    _ = resonant_collinearity.number_of_outer_antinodes(puzzle_input, allocator) catch {};
+}
+
+// Benchmark of part 2
+fn task_2(allocator: std.mem.Allocator) void {
+    _ = resonant_collinearity.number_of_all_antinodes(puzzle_input, allocator) catch {};
+}
+
+pub fn main() !void {
+    const stdout = std.io.getStdOut().writer();
+    var bench = zbench.Benchmark.init(std.heap.page_allocator, .{});
+    defer bench.deinit();
+
+    try bench.add("Day 08 - Task 1", task_1, .{});
+    try bench.add("Day 08 - Task 2", task_2, .{});
+
+    try stdout.writeAll("\n");
+    try bench.run(stdout);
+}

2024/08/resonant_collinearity/build.zig

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+const std = @import("std");
+
+pub fn build(b: *std.Build) void {
+    const target = b.standardTargetOptions(.{});
+    const optimize = b.standardOptimizeOption(.{});
+
+    // -------------------------- Solution module --------------------------- \\
+    const resonant_collinearity = b.addModule("resonant_collinearity", .{
+        .root_source_file = b.path("src/resonant_collinearity.zig"),
+    });
+
+    // -------------------------- Main executable --------------------------- \\
+    const resonant_collinearity_exe = b.addExecutable(.{
+        .name = "resonant_collinearity",
+        .root_source_file = b.path("src/main.zig"),
+        .target = target,
+        .optimize = optimize,
+    });
+
+    const yazap = b.dependency("yazap", .{});
+    resonant_collinearity_exe.root_module.addImport("yazap", yazap.module("yazap"));
+    resonant_collinearity_exe.root_module.addImport("resonant_collinearity", resonant_collinearity);
+    b.installArtifact(resonant_collinearity_exe);
+
+    const run_cmd = b.addRunArtifact(resonant_collinearity_exe);
+    run_cmd.step.dependOn(b.getInstallStep());
+    if (b.args) |args| {
+        run_cmd.addArgs(args);
+    }
+
+    const run_step = b.step("run", "Run Resonant Collinearity (day 08) app");
+    run_step.dependOn(&run_cmd.step);
+
+    // --------------------------- Example tests ---------------------------- \\
+    const resonant_collinearity_tests = b.addTest(.{
+        .name = "resonant_collinearity_tests",
+        .root_source_file = b.path("tests/example_tests.zig"),
+        .target = target,
+        .optimize = optimize,
+    });
+
+    resonant_collinearity_tests.root_module.addImport("resonant_collinearity", resonant_collinearity);
+    inline for (1..6) |i| {
+        const num_str = std.fmt.comptimePrint("{!}", .{i});
+        resonant_collinearity_tests.root_module.addAnonymousImport(
+            "example_input_" ++ num_str,
+            .{
+                .root_source_file = b.path("input/example_input_" ++ num_str ++ ".txt"),
+            },
+        );
+    }
+    b.installArtifact(resonant_collinearity_tests);
+
+    const test_step = b.step("test", "Run Resonant Collinearity (day 08) tests");
+    test_step.dependOn(&b.addRunArtifact(resonant_collinearity_tests).step);
+
+    // ------------------------- Puzzle benchmarks -------------------------- \\
+    const resonant_collinearity_benchmarks = b.addExecutable(.{
+        .name = "resonant_collinearity_benchmarks",
+        .root_source_file = b.path("benchmarks/puzzle_benchmarks.zig"),
+        .target = target,
+        .optimize = optimize,
+    });
+
+    const zbench = b.dependency("zbench", .{
+        .target = target,
+        .optimize = optimize,
+    });
+    resonant_collinearity_benchmarks.root_module.addImport("zbench", zbench.module("zbench"));
+    resonant_collinearity_benchmarks.root_module.addImport("resonant_collinearity", resonant_collinearity);
+    resonant_collinearity_benchmarks.root_module.addAnonymousImport("puzzle_input", .{
+        .root_source_file = b.path("input/puzzle_input.txt"),
+    });
+    b.installArtifact(resonant_collinearity_benchmarks);
+
+    const benchmark_step = b.step("benchmark", "Run Resonant Collinearity (day 08) benchmarks");
+    benchmark_step.dependOn(&b.addRunArtifact(resonant_collinearity_benchmarks).step);
+}

2024/08/resonant_collinearity/build.zig.zon

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+.{
+    .name = "resonant_collinearity",
+    .version = "0.1.0",
+    .minimum_zig_version = "0.13.0",
+    .dependencies = .{
+        .yazap = .{
+            .url = "git+https://github.com/prajwalch/yazap#c2e3122d5dd6192513ba590f229dbc535110efb8",
+            .hash = "122054439ec36ac10987c87ae69f3b041b40b2e451af3fe3ef1fc578b3bad756a800",
+        },
+        .zbench = .{
+            .url = "git+https://github.com/hendriknielaender/zBench#fb3ecae5d035091fd2392a2ec21970c06fc375fa",
+            .hash = "122095b73930ff5d627429295c669905d85bb9b54394ddc185ad2d61295cc65819e5",
+        },
+    },
+    .paths = .{
+        "build.zig",
+        "build.zig.zon",
+        "src",
+        "input",
+        "tests",
+        "benchmarks",
+    },
+}

2024/08/resonant_collinearity/input/example_input_1.txt

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+..........
+..........
+..........
+....a.....
+..........
+.....a....
+..........
+..........
+..........
+..........

2024/08/resonant_collinearity/input/example_input_2.txt

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+..........
+..........
+..........
+....a.....
+........a.
+.....a....
+..........
+..........
+..........
+..........

2024/08/resonant_collinearity/input/example_input_3.txt

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+..........
+..........
+..........
+....a.....
+........a.
+.....a....
+..........
+......A...
+..........
+..........

2024/08/resonant_collinearity/input/example_input_4.txt

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+............
+........0...
+.....0......
+.......0....
+....0.......
+......A.....
+............
+............
+........A...
+.........A..
+............
+............

2024/08/resonant_collinearity/input/example_input_5.txt

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+T.........
+...T......
+.T........
+..........
+..........
+..........
+..........
+..........
+..........
+..........

2024/08/resonant_collinearity/src/main.zig

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+const std = @import("std");
+const yazap = @import("yazap");
+const resonant_collinearity = @import("resonant_collinearity");
+
+const allocator = std.heap.page_allocator;
+const log = std.log;
+const App = yazap.App;
+const Arg = yazap.Arg;
+const string = []const u8;
+
+pub fn main() !void {
+    var app = App.init(
+        allocator,
+        "resonant_collinearity",
+        "Day 08: Resonant Collinearity",
+    );
+    defer app.deinit();
+
+    var cmd = app.rootCommand();
+    cmd.setProperty(.help_on_empty_args);
+    try cmd.addArg(Arg.singleValueOption(
+        "filename",
+        'f',
+        "Input file (e.g. input/puzzle_input.txt)",
+    ));
+
+    const matches = try app.parseProcess();
+
+    const stdout_file = std.io.getStdOut().writer();
+    var bw = std.io.bufferedWriter(stdout_file);
+    const stdout = bw.writer();
+
+    var file_content: string = undefined;
+    if (matches.getSingleValue("filename")) |filename| {
+        const file = try std.fs.cwd().openFile(filename, .{});
+        defer file.close();
+
+        const file_size = try file.getEndPos();
+        const buffer: []u8 = try allocator.alloc(u8, file_size);
+        defer allocator.free(buffer);
+
+        _ = try file.readAll(buffer);
+        file_content = std.mem.Allocator.dupe(
+            allocator,
+            u8,
+            std.mem.trim(u8, buffer, "\n"),
+        ) catch unreachable;
+    } else {
+        try app.displayHelp();
+        return;
+    }
+
+    const result_1 = resonant_collinearity.number_of_outer_antinodes(
+        file_content,
+        allocator,
+    );
+    try stdout.print("Number of outer antinodes: {!}\n", .{result_1});
+    try bw.flush();
+
+    const result_2 = resonant_collinearity.number_of_all_antinodes(
+        file_content,
+        allocator,
+    );
+    try stdout.print("Number of all antinodes: {!}\n", .{result_2});
+    try bw.flush();
+}