From bf494891a715080dde14753b51befb463a6c246f Mon Sep 17 00:00:00 2001
From: Mathias Magnusson <mathias@magnusson.space>
Date: Tue, 3 Dec 2024 14:26:04 +0100
Subject: aoc2024: make build tool download input & add shared main function

---
 aoc24/src/day2p2.zig | 63 ----------------------------------------------------
 1 file changed, 63 deletions(-)
 delete mode 100644 aoc24/src/day2p2.zig

(limited to 'aoc24/src/day2p2.zig')

diff --git a/aoc24/src/day2p2.zig b/aoc24/src/day2p2.zig
deleted file mode 100644
index fd2f7a3..0000000
--- a/aoc24/src/day2p2.zig
+++ /dev/null
@@ -1,63 +0,0 @@
-const std = @import("std");
-
-pub fn main() !void {
-    const input = @embedFile("2.txt");
-    try std.fmt.format(std.io.getStdOut().writer(), "{}\n", .{try run(input)});
-}
-
-test {
-    const value = try run(
-        \\7 6 4 2 1
-        \\1 2 7 8 9
-        \\9 7 6 2 1
-        \\1 3 2 4 5
-        \\8 6 4 4 1
-        \\1 3 6 7 9
-    );
-    std.debug.print("got {}\n", .{value});
-    std.debug.assert(value == 4);
-}
-
-pub fn run(input: []const u8) !u32 {
-    var lines = std.mem.split(u8, input, "\n");
-
-    var arena = std.heap.ArenaAllocator.init(std.heap.page_allocator);
-    defer arena.deinit();
-    const allocator = arena.allocator();
-
-    var reports = std.ArrayList(std.ArrayList(u32)).init(allocator);
-    defer reports.deinit();
-
-    while (lines.next()) |line| {
-        if (line.len == 0) continue;
-        var report = std.ArrayList(u32).init(allocator);
-        var words = std.mem.split(u8, line, " ");
-        while (words.next()) |word| {
-            try report.append(try std.fmt.parseInt(u32, word, 10));
-        }
-        try reports.append(report);
-    }
-
-    var safe: u32 = 0;
-    for (reports.items) |report| {
-        var is_safe = false;
-        for ([_]bool{ false, true }) |increasing| for (0..report.items.len) |skipped| {
-            const first: u32 = if (skipped == 0) 1 else 0;
-            var prev = report.items[first];
-            for (first + 1..report.items.len) |i| {
-                if (i == skipped) continue;
-                const curr = report.items[i];
-                if ((prev < curr) != increasing or prev == curr or @max(prev, curr) - @min(prev, curr) > 3) {
-                    break;
-                }
-                prev = curr;
-            } else {
-                is_safe = true;
-            }
-        };
-        if (is_safe) safe += 1;
-        // std.debug.print("{any} is {s}safe\n", .{ report.items, if (is_safe) "" else "un" });
-    }
-
-    return safe;
-}
-- 
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