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Diffstat (limited to '')
-rw-r--r-- | 2021/01/first.zig | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/2021/01/first.zig b/2021/01/first.zig new file mode 100644 index 0000000..79dcc89 --- /dev/null +++ b/2021/01/first.zig @@ -0,0 +1,26 @@ +const std = @import("std"); + +const example = @embedFile("example"); +const input = @embedFile("input"); + +pub fn main() anyerror!void { + try std.testing.expectEqual(solve(example), 7); + 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; + var prev: ?u64 = null; + while (it.next()) |value| { + const n = try std.fmt.parseInt(u64, value, 10); + if (prev) |p| { + if (p < n) { + tot += 1; + } + } + prev = n; + } + return tot; +} |