52 lines
1.4 KiB
Zig
52 lines
1.4 KiB
Zig
const std = @import("std");
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// I don't have much time for this, it ain't gonna
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// be as pretty as the other ones
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pub fn main() void {
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var totalFit: usize = 0;
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var totalAabb: usize = 0;
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const input = @embedFile("input.asc");
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var iter = std.mem.split(u8, input, "\n");
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while(iter.next()) |line| {
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if (line.len <= 0) continue;
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//////////////////
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// Split the nums into an array
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////////////////
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const delim = "-,-";
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if ((delim.len+1)&1 != 0) @panic("Amount of nums should always be even");
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var nums = [_]u8{undefined} ** (delim.len+1);
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var startIdx: usize = 0;
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inline for(nums) |_,i| {
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// Get the number
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const numstr = if (i < delim.len)
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std.mem.sliceTo(line[startIdx..], delim[i])
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else
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line[startIdx..];
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startIdx += numstr.len + 1;
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nums[i] = std.fmt.parseInt(u8, numstr, 10) catch unreachable;
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}
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if (fitTest(nums[0..2], nums[2..4])) totalFit += 1;
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if (aabbTest(nums[0..2], nums[2..4])) totalAabb += 1;
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}
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std.debug.print("Part 1: {}\n", .{totalFit});
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std.debug.print("Part 2: {}\n", .{totalAabb});
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}
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fn fitTest(a: []const u8, b: []const u8) bool {
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return (a[0] >= b[0] and a[1] <= b[1]) or (b[0] >= a[0] and b[1] <= a[1]);
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}
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fn aabbTest(a: []const u8, b: []const u8) bool {
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return a[1] >= b[0] and a[0] <= b[1];
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}
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