init
This commit is contained in:
commit
a02a9713ad
5
.gitignore
vendored
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5
.gitignore
vendored
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zig-cache/
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zig-out/
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deps.zig
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gyro.lock
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.gyro
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34
build.zig
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34
build.zig
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const std = @import("std");
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pub fn build(b: *std.build.Builder) void {
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// Standard target options allows the person running `zig build` to choose
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// what target to build for. Here we do not override the defaults, which
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// means any target is allowed, and the default is native. Other options
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// for restricting supported target set are available.
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const target = b.standardTargetOptions(.{});
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// Standard release options allow the person running `zig build` to select
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// between Debug, ReleaseSafe, ReleaseFast, and ReleaseSmall.
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const mode = b.standardReleaseOptions();
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const exe = b.addExecutable("aoc2022", "src/main.zig");
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exe.setTarget(target);
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exe.setBuildMode(mode);
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exe.install();
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const run_cmd = exe.run();
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run_cmd.step.dependOn(b.getInstallStep());
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if (b.args) |args| {
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run_cmd.addArgs(args);
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}
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const run_step = b.step("run", "Run the app");
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run_step.dependOn(&run_cmd.step);
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const exe_tests = b.addTest("src/main.zig");
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exe_tests.setTarget(target);
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exe_tests.setBuildMode(mode);
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const test_step = b.step("test", "Run unit tests");
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test_step.dependOn(&exe_tests.step);
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}
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2237
input/day1.txt
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2237
input/day1.txt
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File diff suppressed because it is too large
Load diff
4
src/aoc.zig
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4
src/aoc.zig
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pub const DayInfo = struct {
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num: usize,
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name: []const u8,
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};
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57
src/days/day1.zig
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57
src/days/day1.zig
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const std = @import("std");
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const aoc = @import("../aoc.zig");
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pub const info = aoc.DayInfo{
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.num = 1,
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.name = "Calorie Counting",
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};
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fn getCounts(alloc: std.mem.Allocator, infile: *std.fs.File) !std.ArrayList(usize) {
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var sums = std.ArrayList(usize).init(alloc);
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errdefer sums.deinit();
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var reader = std.io.bufferedReader(infile.reader());
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var cur_idx: usize = 0;
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try sums.append(0);
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var line_buf: [512]u8 = undefined;
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while (try reader.reader().readUntilDelimiterOrEof(&line_buf, '\n')) |line| {
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const trimmed = std.mem.trim(u8, line, &std.ascii.whitespace);
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if (trimmed.len == 0) {
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try sums.append(0);
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cur_idx += 1;
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continue;
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}
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sums.items[cur_idx] += try std.fmt.parseInt(usize, trimmed, 10);
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}
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return sums;
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}
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pub fn part1(alloc: std.mem.Allocator, infile: *std.fs.File) !void {
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const sums = try getCounts(alloc, infile);
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defer sums.deinit();
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try std.io.getStdOut().writer().print(
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"{d}\n",
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.{std.mem.max(usize, sums.items)},
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);
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}
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pub fn part2(alloc: std.mem.Allocator, infile: *std.fs.File) !void {
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var sums = try getCounts(alloc, infile);
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defer sums.deinit();
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var sum: usize = 0;
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var i: usize = 0;
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while (i < 3) : (i += 1) {
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const max_idx = std.mem.indexOfMax(usize, sums.items);
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sum += sums.items[max_idx];
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sums.items[max_idx] = 0;
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}
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try std.io.getStdOut().writer().print("{d}\n", .{sum});
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}
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37
src/main.zig
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37
src/main.zig
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const std = @import("std");
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const aoc = @import("aoc.zig");
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const days = .{
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@import("days/day1.zig"),
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};
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pub fn main() !void {
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var gpa = std.heap.GeneralPurposeAllocator(.{}){};
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defer _ = gpa.deinit();
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const alloc = gpa.allocator();
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inline for (days) |day| {
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const info: aoc.DayInfo = day.info;
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const input_path = try std.fmt.allocPrint(alloc, "input/day{}.txt", .{info.num});
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defer alloc.free(input_path);
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var input_file = try std.fs.cwd().openFile(input_path, .{});
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defer input_file.close();
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try std.io.getStdOut().writer().print(
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"\n==== Day {}: {s} (Part 1) ====\n",
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.{ info.num, info.name },
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);
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try day.part1(alloc, &input_file);
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if (@hasDecl(day, "part2")) {
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try input_file.seekTo(0);
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try std.io.getStdOut().writer().print(
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"\n==== Day {}: {s} (Part 2) ====\n",
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.{ info.num, info.name },
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);
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try day.part2(alloc, &input_file);
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}
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}
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}
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