diff options
Diffstat (limited to '2022/03-rucksack-reorganization/first.zig')
-rw-r--r-- | 2022/03-rucksack-reorganization/first.zig | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/2022/03-rucksack-reorganization/first.zig b/2022/03-rucksack-reorganization/first.zig new file mode 100644 index 0000000..38c6d0e --- /dev/null +++ b/2022/03-rucksack-reorganization/first.zig @@ -0,0 +1,33 @@ +const std = @import("std"); + +const example = @embedFile("example"); +const input = @embedFile("input"); + +pub fn main() anyerror!void { + try std.testing.expectEqual(solve(example), 157); + const result = try solve(input); + try std.io.getStdOut().writer().print("{}\n", .{result}); +} + +fn solve(puzzle: []const u8) !u64 { + var it = std.mem.tokenize(u8, puzzle, "\n"); + var tot: u64 = 0; + while (it.next()) |line| { + var i: usize = 0; + var middle = line.len / 2; + outer: while (i < middle) : (i += 1) { + var j = middle; + while (j < line.len) : (j += 1) { + if (line[i] == line[j]) { + break :outer; + } + } + } + if (line[i] <= 'Z') { + tot = tot + line[i] - 'A' + 27; + } else { + tot = tot + line[i] - 'a' + 1; + } + } + return tot; +} |