diff options
Diffstat (limited to 'day-2/main.zig')
-rw-r--r-- | day-2/main.zig | 110 |
1 files changed, 0 insertions, 110 deletions
diff --git a/day-2/main.zig b/day-2/main.zig deleted file mode 100644 index 3289ad2..0000000 --- a/day-2/main.zig +++ /dev/null @@ -1,110 +0,0 @@ -const std = @import("std"); -const slurp = @import("util/file.zig").slurp; - -const Hand = enum(u8) { Rock = 1, Paper = 2, Scissors = 3 }; -const Outcome = enum(u8) { Win = 6, Draw = 3, Lose = 0 }; - -const KV_Hand = struct { @"0": []const u8, @"1": Hand }; -const KV_Outcome = struct { @"0": []const u8, @"1": Outcome }; - -const Player_A_KV = std.ComptimeStringMap(Hand, [_]KV_Hand{ - .{ .@"0" = "A", .@"1" = .Rock }, - .{ .@"0" = "B", .@"1" = .Paper }, - .{ .@"0" = "C", .@"1" = .Scissors }, -}); - -const Player_B_KV = std.ComptimeStringMap(Hand, [_]KV_Hand{ - .{ .@"0" = "X", .@"1" = .Rock }, - .{ .@"0" = "Y", .@"1" = .Paper }, - .{ .@"0" = "Z", .@"1" = .Scissors }, -}); - -const Outcome_KV = std.ComptimeStringMap(Outcome, [_]KV_Outcome{ - .{ .@"0" = "X", .@"1" = .Lose }, - .{ .@"0" = "Y", .@"1" = .Draw }, - .{ .@"0" = "Z", .@"1" = .Win }, -}); - -const match_impl = struct { - fn puzzle_1(a: Hand, b: Hand) u8 { - switch (b) { - .Rock => { - switch (a) { - .Rock => return @enumToInt(b) + @enumToInt(Outcome.Draw), - .Paper => return @enumToInt(b) + @enumToInt(Outcome.Lose), - .Scissors => return @enumToInt(b) + @enumToInt(Outcome.Win), - } - }, - .Paper => { - switch (a) { - .Rock => return @enumToInt(b) + @enumToInt(Outcome.Win), - .Paper => return @enumToInt(b) + @enumToInt(Outcome.Draw), - .Scissors => return @enumToInt(b) + @enumToInt(Outcome.Lose), - } - }, - .Scissors => { - switch (a) { - .Rock => return @enumToInt(b) + @enumToInt(Outcome.Lose), - .Paper => return @enumToInt(b) + @enumToInt(Outcome.Win), - .Scissors => return @enumToInt(b) + @enumToInt(Outcome.Draw), - } - }, - } - } - - fn puzzle_2(a: Hand, b: Outcome) u8 { - switch (a) { - .Rock => { - switch (b) { - .Win => return @enumToInt(b) + @enumToInt(Hand.Paper), - .Lose => return @enumToInt(b) + @enumToInt(Hand.Scissors), - .Draw => return @enumToInt(b) + @enumToInt(Hand.Rock), - } - }, - .Paper => { - switch (b) { - .Win => return @enumToInt(b) + @enumToInt(Hand.Scissors), - .Lose => return @enumToInt(b) + @enumToInt(Hand.Rock), - .Draw => return @enumToInt(b) + @enumToInt(Hand.Paper), - } - }, - .Scissors => { - switch (b) { - .Win => return @enumToInt(b) + @enumToInt(Hand.Rock), - .Lose => return @enumToInt(b) + @enumToInt(Hand.Paper), - .Draw => return @enumToInt(b) + @enumToInt(Hand.Scissors), - } - }, - } - } -}; - -pub fn puzzle_1(input: []const u8) u16 { - var iter = std.mem.split(u8, input, "\n"); - - var score: u16 = 0; - - while (iter.next()) |line| { - score += match_impl.puzzle_1( - Player_A_KV.get(&[_]u8{line[0]}).?, - Player_B_KV.get(&[_]u8{line[2]}).?, - ); - } - - return score; -} - -pub fn puzzle_2(input: []const u8) u16 { - var iter = std.mem.split(u8, input, "\n"); - - var score: u16 = 0; - - while (iter.next()) |line| { - score += match_impl.puzzle_2( - Player_A_KV.get(&[_]u8{line[0]}).?, - Outcome_KV.get(&[_]u8{line[2]}).?, - ); - } - - return score; -} |