add day 6

3 files changed, 80 insertions, 0 deletions

diff --git a/day_06.zig b/day_06.zig
new file mode 100644
index 0000000..38aeddd
--- /dev/null
+++ b/day_06.zig
@@ -0,0 +1,78 @@
+const std = @import("std");
+const Result = @import("util/aoc.zig").Result;
+
+pub fn puzzle_1(input: []const u8) Result {
+    var iter = std.mem.split(u8, input, "\n");
+
+    var i: usize = 0;
+    mainLoop: while (iter.next()) |line| {
+        var buf = std.mem.zeroes([4]u32);
+        var buf_idx: usize = 0;
+        for (line) |c, idx| {
+            if (buf_idx > 3) buf_idx = 0;
+            buf[buf_idx] = @as(u32, 1) << @intCast(u5, c - 97); // 97 == 'a'
+            buf_idx += 1;
+            if (@popCount(buf[0] | buf[1] | buf[2] | buf[3]) == 4) {
+                i = idx + 1;
+                break :mainLoop;
+            }
+        }
+    }
+
+    return .{ .int = @intCast(i32, i) };
+}
+
+pub fn puzzle_2(input: []const u8) Result {
+    var iter = std.mem.split(u8, input, "\n");
+
+    var i: usize = 0;
+    mainLoop: while (iter.next()) |line| {
+        var buf = std.mem.zeroes([14]u32);
+        var buf_idx: usize = 0;
+        for (line) |c, idx| {
+            if (buf_idx > 13) buf_idx = 0;
+            buf[buf_idx] = @as(u32, 1) << @intCast(u5, c - 97); // 97 == 'a'
+            buf_idx += 1;
+
+            const hammer: u32 = blk: {
+                var hidx: usize = 0;
+                var tmp: u32 = 0;
+                while (hidx < 14) : (hidx += 1) tmp |= buf[hidx];
+                break :blk tmp;
+            };
+
+            if (@popCount(hammer) == 14) {
+                i = idx + 1;
+                break :mainLoop;
+            }
+        }
+    }
+
+    return .{ .int = @intCast(i32, i) };
+}
+
+//pub fn puzzle_2(input: []const u8) Result {
+//var iter = std.mem.split(u8, input, "\n");
+
+//var count: u16 = 0;
+//mainLoop: while (true) {
+//var parts = std.mem.zeroes([3]u64);
+
+//for (parts) |*p| {
+//const line = iter.next() orelse break :mainLoop;
+//for (line) |_, i| {
+//p.* |= @as(u64, 1) << @intCast(u6, line[i] - 65);
+//}
+//}
+
+//count += char_to_priority(@intCast(u8, 65 + 63) - @clz(parts[0] & parts[1] & parts[2]));
+//}
+
+//return .{ .int = count };
+//}
+
+//fn char_to_priority(char: u8) u8 {
+//if (char >= 65 and char <= 90)
+//return char - 38;
+//return char - 96;
+//}
diff --git a/inputs/day_06 b/inputs/day_06
new file mode 100644
index 0000000..13a015a
--- /dev/null
+++ b/inputs/day_06
@@ -0,0 +1 @@
+stftmtvvtvqqczqqnjnwwlqqdzdnnsvnsswbbwsstvvssfjsjbjfjmjpjzpplpppjzjqqdzzhqqqqtcccbzzzwzrrrdqdldpdsppmqmmnwwjddnqqscclncllvhllqpllchhbccfcbcgbcgcfcncsnstsddldzldlmljjfbjbzbccmrmrppqmqsswbwqwdwwcnwwhrhppfsfvsvrrfllhglhlggjpggzjgzggnvvqfvvhffpwpmwpmmwvmvrmrbmbzmzbbvgbbcfbcfbfppnzpzrrszzqgzgjgddmdwmwrmwmzznqzqhqhvvsslppsrrljjfpfcpfpbbrjjwjmjpmpfmfzfvzfftptzzbmzmddpvdddqmmzjzbbhmmwqmmmbgmmttrhrqrvqvzvdvzdvvmsvmmqlmmtddvlvttrtvtvcttvssnwwbccqmmgbbqrqlqjllmslsmslltrtffzfpfzpffvwvffsllgvgtgwtwnttfzznzqzztfzfvzznnwzzcvcqvvdwwsnsvnnthhnphpssmjmfmhfmhmgmllmsmrsrrmmhsswjwqqdbbghhpsptsswvsvfvcffqcchlhfhvhjhdjhddvjjpmmsrsqrrngrrmvmsvsllrmlrlprpggqzqmmvlvvwrwnrwwzztrzrbrdbrdbbhlhchjchhtthpthphplhhlphpjjsddtppvbpbbmnmgnmmqbbrhhfrfpfjpjgjljcctwtmwtwvvvmsvmmnjmnjmnmqmvvggtzzctzttszsvvjwjqjmjbjvbbshbhghlghhpvpnvvqmmgjmmggqvqtvqtvqtvvmlljbbhdhshnnwqwbbrnnwswmwfmfttjztjzjsjzjdjbdjjzfzdzgzhghgpgqqdzdhhnwnjnnhrnrqqjsqsllbzzzcnzzmjmvmrvrgrfgrrqmrmpmpzmzqqfwqfwfjjhphgpptzzwmmfjjvbjvbbqsbsbcbppjzpjjzpjpvjjzdjjgcgppvrvjrjpjspjppntpnnjlnlrnrdndjnnsbnnppvspprbrddjrdrmrfmmtmtbtntftjjsscvcbvvcnccnbnrbbmlmddhpdptddmrmmjddnjjtztctqqhhttqctqtbbnfnwnmndnzzljlgltgltljtjllwjjbrjbrbpbgppmzpmpggdnnmznnhhmfhhssgtgvvlsljltlppdqqbtbvbsvsswbsbhsbsmmwswbbbbhvbvcbvvsvcsvvmfmlmgmjgmmbqbrbsrrgrsggldlmlttpbpmmtptctqcqvccnhnmnssmvsmmddlclpccfwfdfqfvqfvfqqwmmwrmmbzznpnllfttgcttnbtnnsswttfppnddpdpsphhpttnrtrlrsrmrnmmzhmhnmnwwddmhdhqqhbqqdcclnlfnnzfnzzqfqddczcqcrrjsrrswslltfltffjhhqqfcchqcqpplbltbblbcbncnpccdffcwwqzwqqlwwtjjpbbjvvljvjgvvrsszfsfcssqsvvwsvvdfvdfdpffztzrtzthzhhmwmzwzssjlsldsldsldlvvjdvvnbvnvmvmccvfcvcfcbchhzqqhgqqcbbhdbdpddwcdwwzszsfszzgbgdgzgvgsgnssfqsqjssrppsgppmmpzmppglgqlqqpzpqqfzzzrnzrnrqqzzfwzzffjfzzmnznpznpprhhvcvvvfddcrdrsscnnsznzszbznntwntnrnbnzzrnnlwlggnzzwppmbmrrncnlclzltlblhhlvhvphhsdhsdsqddgzgvvshvvzzbvbrrlplqpptplljcljlvjlvlqvvndnsdddmvddzhzjjgpjpddppzllwtwfwgfgpffmhhzllsttmqqhjhhpvpgpfjsgscnwjmwmtmptwlpfjljwgpgntrlpjfgbjqmcpzgfhrwmznqnsbpptbdrzmdtvvtdqjgrjzlphndhmlchvddglqnqsjqrfqslprsvlqjwqnsmsznptsstpvdntpttslpmqqbsdlqwpjqnzmpblgqmjrvqwsncnzdszgfsghddlnwhwzpgtddgstttvrjfjwwfrgsdjjngljqlqcrzlgsmwngbzvmjwtnqdqcgwmfhsztgrtvvfzbtstmdbqpntdpsszjthqvpbdwswfzvmrcpbgbgdmldfhvdpfsmdzfhwsrpcglsztdwqgbqszcqtqjhgntzvttldqsffftzmllptzhmhpmfsgcchfrnrchnsgcfjbgrqmvrmmhnmlnwtgwhznqfgwnlrqlpjrvfrgzcjwncvlwhpclfzngbgvmrmlzngmqlvvwhbpjzlclgrcnnvnlppqhvlrnpzvmtsbdpfbwgffgzfwvltcfvfdcnfhwvcvclwwbmshhmpgrzgltwjmqczpqzdwfjpqhmwqhvvgnpgtwrjrgwvhthtdrdpnwpbmwstgblwmbfvlwflqmfbcsgwstwvncwfcsmrpcfrrvmlbqhdtdswswfnzhgzlngwsrtlzfcgdppmjnghfrgbdqhqmslhcqddjvsslsjwqqznttqjzdlghnsvqqtwrpfbzjgwnrhhvlnbqmnvcpblzgbzltnrhzpdwvbqbtmctbzgsdjfzswrbqbzgvwjlwtmgcllnmnwcljbhbplpvtgpgjftfrbgpgmhghnjcgjfqmsbqhbgtzbfzgwmfdsgfgmgzsbgdrszfhjttbvcqjzjgbqfgswlmrrhnmnfrptvjtlnvplgznsljzfzmhghlsccnqzflfnmbhshfprhclmtfptcmtnhrjgnngnqnczvcgzzlntftjsbgpgwzbnrhzzfqmznqnzfrvjzsmtpjbswzjlbgpfftzrzbfgdblpwscbqjfrfmfnhhlhjprtlzzvwnwzsnqhnmgwsdprnrblgbclzhthftqzdljspwdzwmwhfmdzmlvqsngppdfsjdprbrhffcvcvzztjjqcffwbrvpzvzfzhjvsfvsnrmjvqmjtrjbmbqsdtjgvtbbzzfmnmrrflgcdtljpmpvqvdbzgbmhjgccgdtplllctzqpfqnsztbwdbmqgfzrcddtmwrgmwsghcfpgqssdjrtqhtjfbpjvjdnzgvpzrhbrhrhcmpbglbbrvdltdpsrwjbjzftccwgnqmnlqlpjwrfdvmlgvgqznlvsmpzsmgjstvqbqpprzlsdndpfbmqcrfgvcfvlfhmpfnnqlcqlnbbgcrrrhbtzwnwmfrnrzvgmqlmqnmnzbwflwzcmncphjqztlrzvpztqhptmfsrppvvlzcfnlrwptgccsjjjscjcwnzssmbcvtzhnscgsbrchbqbrtdzllfvmqfwznfzpzmbfwcdsfhdlddnfbdgqbqjqzdtppshwcvvcjqstdgtgbhmlqlrfrhbvfsszsmbldmwfnfgnjptdslnzwcjgmvbnqcfzjmrslrlllplbhpjcnvzmvrfzwqhmbnrvpqnvcfncgfwqlvcwpwwljssfmswctcmhgtphvjdpfnnzznfbdjcsndrczlgdjhrnrltsgbtqmqcbwlthwcgsbvqbnntcznczpmlmblwdrlmzqdztwsgjthjwtfcpgwbczmdmhttzcwvdzhdfldmwnbnfdcjgvjhrfltjnjhqhzmzrlbncwdnlgshmqhpgsdwbvmvjsfgvgqzqjqdzqzmfmrncfdgrqfrnstvpqwtltnhgrmhgmmnwvlnsfmmbjrdmrnlgfgpqncdpqgvjltpghbgffdppdcfhdqhtvrdnfvcttlrqppfnqtmzpfgsnmjqfrgtbbdzzrccsrzgfjndlrnzqmjjtgldglcpzcrhwfplvdndjtzbpfbbbpfljqnlvrdzbrvczzwdrvzlmslbjsqgqdrltmhwcdpldqldlpctcbjmsvdwlfspzlpgrhdrvjtprcwrmszvzwmmjgvsbfcztmrdgrgshgtggpzszgqhwmhdzjmzsgqsfmqvcgqqwgprgvvqlbfhpwsfbjdqtcfnfhsgzthzhbpwggbnscqbnvcdprsbgllsrdcclqggfgfdrpqlqljfwpmzdhthpczcsqrrm
diff --git a/main.zig b/main.zig
index 3d0ecb4..7b5cee0 100644
--- a/main.zig
+++ b/main.zig
@@ -11,6 +11,7 @@ const t = [_]struct {
     .{ .day = @import("day_03.zig"), .input = @embedFile("inputs/day_03"), .expect = &[_]Result{ .{ .int = 8039 }, .{ .int = 2510 } } },
     .{ .day = @import("day_04.zig"), .input = @embedFile("inputs/day_04"), .expect = &[_]Result{ .{ .int = 483 }, .{ .int = 874 } } },
     .{ .day = @import("day_05.zig"), .input = @embedFile("inputs/day_05"), .expect = &[_]Result{ .{ .string = "SHMSDGZVC" }, .{ .string = "VRZGHDFBQ" } } },
+    .{ .day = @import("day_06.zig"), .input = @embedFile("inputs/day_06"), .expect = &[_]Result{ .{ .int = 1896 }, .{ .int = 3452 } } },
 };
 
 pub fn main() !void {