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Day3 part 1

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Adam Millerchip 2022-08-13 22:17:55 +09:00
parent 8861ce0b8e
commit 6bf0d44e09
1 changed files with 27 additions and 3 deletions
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30
2020/zig/src/day03.zig
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@ -1,6 +1,6 @@
const std = @import("std"); const std = @import("std");
const Allocator = std.mem.Allocator; const Allocator = std.mem.Allocator;
const List = std.ArrayList; const ArrayList = std.ArrayList;
const Map = std.AutoHashMap; const Map = std.AutoHashMap;
const StrMap = std.StringHashMap; const StrMap = std.StringHashMap;
const BitSet = std.DynamicBitSet; const BitSet = std.DynamicBitSet;
@ -9,10 +9,34 @@ const Str = []const u8;
const util = @import("util.zig"); const util = @import("util.zig");
const gpa = util.gpa; const gpa = util.gpa;
const data = @embedFile("../data/day03.txt"); const data = @embedFile("input");
pub fn main() !void { pub fn main() !void {
// Still have no idea how to clean up the ArrayLists
var it = tokenize(u8, data, "\n");
var rows_al = ArrayList([]bool).init(gpa);
while (it.next()) |line| {
var row = ArrayList(bool).init(gpa);
for (line) |char| {
try row.append(char == '#');
}
try rows_al.append(row.toOwnedSlice());
}
var rows = rows_al.toOwnedSlice();
var x: usize = 0;
var y: usize = 0;
var count: usize = 0;
while (y < rows.len) {
var square = rows[y][x];
if (square) {
count += 1;
}
x = try std.math.mod(usize, x + 3, rows[y].len);
y += 1;
}
print("{}", .{count});
} }
// Useful stdlib functions // Useful stdlib functions